The modern Olympic Games or Olympics ( French: Jeux olympiques  ) are leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competitions. The Olympic Games are considered the world's foremost sports competition with more than 200 nations participating.  The Olympic Games are held every four years, with the Summer and Winter Games alternating by occurring every four years but two years apart.
Their creation was inspired by the ancient Olympic Games, which were held in Olympia, Greece, from the 8th century BC to the 4th century AD. Baron Pierre de Coubertin founded the International Olympic Committee (IOC) in 1894, leading to the first modern Games in Athens in 1896. The IOC is the governing body of the Olympic Movement, with the Olympic Charter defining its structure and authority.
The evolution of the Olympic Movement during the 20th and 21st centuries has resulted in several changes to the Olympic Games. Some of these adjustments include the creation of the Winter Olympic Games for snow and ice sports, the Paralympic Games for athletes with a disability, the Youth Olympic Games for athletes aged 14 to 18, the five Continental games (Pan American, African, Asian, European, and Pacific), and the World Games for sports that are not contested in the Olympic Games. The Deaflympics and Special Olympics are also endorsed by the IOC. The IOC has had to adapt to a variety of economic, political, and technological advancements. As a result, the Olympics has shifted away from pure amateurism, as envisioned by Coubertin, to allowing participation of professional athletes. The growing importance of mass media created the issue of corporate sponsorship and commercialisation of the Games. World wars led to the cancellation of the 1916, 1940, and 1944 Games. Large boycotts during the Cold War limited participation in the 1980 and 1984 Games. The latter, however, attracted 140 National Olympic Committees, which was a record at the time. 
The Olympic Movement consists of international sports federations (IFs), National Olympic Committees (NOCs), and organising committees for each specific Olympic Games. As the decision-making body, the IOC is responsible for choosing the host city for each Games, and organises and funds the Games according to the Olympic Charter. The IOC also determines the Olympic programme, consisting of the sports to be contested at the Games. There are several Olympic rituals and symbols, such as the Olympic flag and torch, as well as the opening and closing ceremonies. Over 13,000 athletes compete at the Summer and Winter Olympic Games in 33 different sports and nearly 400 events. The first, second, and third-place finishers in each event receive Olympic medals: gold, silver, and bronze, respectively.
The Games have grown so much that nearly every nation is now represented. This growth has created numerous challenges and controversies, including boycotts, doping, bribery, and a terrorist attack in 1972. Every two years the Olympics and its media exposure provide unknown athletes with the chance to attain national and sometimes international fame. The Games also constitute an opportunity for the host city and country to showcase themselves to the world.
- 1 Ancient Olympics
- 2 Modern Games
- 3 International Olympic Committee
- 4 Commercialisation
- 5 Symbols
- 6 Ceremonies
- 7 Sports
- 8 Controversies
- 9 Citizenship
- 10 Champions and medallists
- 11 Nations
- 12 See also
- 13 Footnotes
- 14 References
- 15 Sources
- 16 Further reading
- 17 External links
The Ancient Olympic Games were religious and athletic festivals held every four years at the sanctuary of Zeus in Olympia, Greece. Competition was among representatives of several city-states and kingdoms of Ancient Greece. These Games featured mainly athletic but also combat sports such as wrestling and the pankration, horse and chariot racing events. It has been widely written that during the Games, all conflicts among the participating city-states were postponed until the Games were finished. This cessation of hostilities was known as the Olympic peace or truce.  This idea is a modern myth because the Greeks never suspended their wars. The truce did allow those religious pilgrims who were travelling to Olympia to pass through warring territories unmolested because they were protected by Zeus.  The origin of the Olympics is shrouded in mystery and legend;  one of the most popular myths identifies Heracles and his father Zeus as the progenitors of the Games.    According to legend, it was Heracles who first called the Games "Olympic" and established the custom of holding them every four years.  The myth continues that after Heracles completed his twelve labours, he built the Olympic Stadium as an honour to Zeus. Following its completion, he walked in a straight line for 200 steps and called this distance a " stadion" ( Greek: στάδιον, Latin: stadium, "stage"), which later became a unit of distance. The most widely accepted inception date for the Ancient Olympics is 776 BC; this is based on inscriptions, found at Olympia, listing the winners of a footrace held every four years starting in 776 BC.  The Ancient Games featured running events, a pentathlon (consisting of a jumping event, discus and javelin throws, a foot race, and wrestling), boxing, wrestling, pankration, and equestrian events.   Tradition has it that Coroebus, a cook from the city of Elis, was the first Olympic champion. 
The Olympics were of fundamental religious importance, featuring sporting events alongside ritual sacrifices honouring both Zeus (whose famous statue by Phidias stood in his temple at Olympia) and Pelops, divine hero and mythical king of Olympia. Pelops was famous for his chariot race with King Oenomaus of Pisatis.  The winners of the events were admired and immortalised in poems and statues.  The Games were held every four years, and this period, known as an Olympiad, was used by Greeks as one of their units of time measurement. The Games were part of a cycle known as the Panhellenic Games, which included the Pythian Games, the Nemean Games, and the Isthmian Games. 
The Olympic Games reached their zenith in the 6th and 5th centuries BC, but then gradually declined in importance as the Romans gained power and influence in Greece. While there is no scholarly consensus as to when the Games officially ended, the most commonly held date is 393 AD, when the emperor Theodosius I decreed that all pagan cults and practices be eliminated.  Another date commonly cited is 426 AD, when his successor, Theodosius II, ordered the destruction of all Greek temples. 
Various uses of the term "Olympic" to describe athletic events in the modern era have been documented since the 17th century. The first such event was the Cotswold Games or "Cotswold Olimpick Games", an annual meeting near Chipping Campden, England, involving various sports. It was first organised by the lawyer Robert Dover between 1612 and 1642, with several later celebrations leading up to the present day. The British Olympic Association, in its bid for the 2012 Olympic Games in London, mentioned these games as "the first stirrings of Britain's Olympic beginnings". 
L'Olympiade de la République, a national Olympic festival held annually from 1796 to 1798 in Revolutionary France also attempted to emulate the ancient Olympic Games.  The competition included several disciplines from the ancient Greek Olympics. The 1796 Games also marked the introduction of the metric system into sport. 
In 1834 and 1836 olympic games was held in Ramlösa (Sweden) and an additional in Stockholm (Sweden) 1843, all organized by Gustaf Johan Schartau and others. At most 25 000 spectators saw the games.  (More information can be found on the Swedish language wiki page Olympiska spelen i Ramlösa.)
In 1850 an Olympian Class was started by William Penny Brookes at Much Wenlock, in Shropshire, England. In 1859, Brookes changed the name to the Wenlock Olympian Games. This annual sports festival continues to this day.  The Wenlock Olympian Society was founded by Brookes on 15 November 1860. 
Between 1862 and 1867, Liverpool held an annual Grand Olympic Festival. Devised by John Hulley and Charles Melly, these games were the first to be wholly amateur in nature and international in outlook, although only 'gentlemen amateurs' could compete.   The programme of the first modern Olympiad in Athens in 1896 was almost identical to that of the Liverpool Olympics.  In 1865 Hulley, Brookes and E.G. Ravenstein founded the National Olympian Association in Liverpool, a forerunner of the British Olympic Association. Its articles of foundation provided the framework for the International Olympic Charter.  In 1866, a national Olympic Games in Great Britain was organised at London's Crystal Palace. 
Greek interest in reviving the Olympic Games began with the Greek War of Independence from the Ottoman Empire in 1821. It was first proposed by poet and newspaper editor Panagiotis Soutsos in his poem " Dialogue of the Dead", published in 1833.  Evangelos Zappas, a wealthy Greek-Romanian philanthropist, first wrote to King Otto of Greece, in 1856, offering to fund a permanent revival of the Olympic Games.  Zappas sponsored the first Olympic Games in 1859, which was held in an Athens city square. Athletes participated from Greece and the Ottoman Empire. Zappas funded the restoration of the ancient Panathenaic Stadium so that it could host all future Olympic Games. 
The stadium hosted Olympics in 1870 and 1875.  Thirty thousand spectators attended that Games in 1870, though no official attendance records are available for the 1875 Games.  In 1890, after attending the Olympian Games of the Wenlock Olympian Society, Baron Pierre de Coubertin was inspired to found the International Olympic Committee (IOC).  Coubertin built on the ideas and work of Brookes and Zappas with the aim of establishing internationally rotating Olympic Games that would occur every four years.  He presented these ideas during the first Olympic Congress of the newly created International Olympic Committee. This meeting was held from 16 to 23 June 1894, at the University of Paris. On the last day of the Congress, it was decided that the first Olympic Games to come under the auspices of the IOC would take place in Athens in 1896.  The IOC elected the Greek writer Demetrius Vikelas as its first president. 
The first Games held under the auspices of the IOC was hosted in the Panathenaic Stadium in Athens in 1896. The Games brought together 14 nations and 241 athletes who competed in 43 events.  Zappas and his cousin Konstantinos Zappas had left the Greek government a trust to fund future Olympic Games. This trust was used to help finance the 1896 Games.    George Averoff contributed generously for the refurbishment of the stadium in preparation for the Games.  The Greek government also provided funding, which was expected to be recouped through the sale of tickets and from the sale of the first Olympic commemorative stamp set. 
Greek officials and the public were enthusiastic about the experience of hosting an Olympic Games. This feeling was shared by many of the athletes, who even demanded that Athens be the permanent Olympic host city. The IOC intended for subsequent Games to be rotated to various host cities around the world. The second Olympics was held in Paris. 
Changes and adaptations
After the success of the 1896 Games, the Olympics entered a period of stagnation that threatened their survival. The Olympic Games held at the Paris Exposition in 1900 and the Louisiana Purchase Exposition at St. Louis in 1904 were side shows. The Games in Paris did not have a stadium, but were notable for being the first time women took part in the Games. When the St. Louis Games were celebrated roughly 650 athletes participated, but 580 were from the United States. The homogeneous nature of these celebrations was a low point for the Olympic Movement.  The Games rebounded when the 1906 Intercalated Games (so-called because they were the second Games held within the third Olympiad) were held in Athens. These Games were, but are not now, officially recognised by the IOC and no Intercalated Games have been held since. The Games attracted a broad international field of participants and generated great public interest. This marked the beginning of a rise in both the popularity and the size of the Olympics. 
The Winter Olympics was created to feature snow and ice sports that were logistically impossible to hold during the Summer Games. Figure skating (in 1908 and 1920) and ice hockey (in 1920) were featured as Olympic events at the Summer Olympics. The IOC desired to expand this list of sports to encompass other winter activities. At the 1921 Olympic Congress in Lausanne, it was decided to hold a winter version of the Olympic Games. A winter sports week (it was actually 11 days) was held in 1924 in Chamonix, France, in connection with the Paris Games held three months later; this event became the first Winter Olympic Games.  Although it was intended that the same country host both the Winter and Summer Games in a given year, this idea was quickly abandoned. The IOC mandated that the Winter Games be celebrated every four years on the same year as their summer counterpart.  This tradition was upheld until the 1992 Games in Albertville, France; after that, beginning with the 1994 Games, the Winter Olympics were held every four years, two years after each Summer Olympics. 
In 1948, Sir Ludwig Guttmann, determined to promote the rehabilitation of soldiers after World War II, organised a multi-sport event between several hospitals to coincide with the 1948 London Olympics. Guttmann's event, known then as the Stoke Mandeville Games, became an annual sports festival. Over the next twelve years, Guttmann and others continued their efforts to use sports as an avenue to healing. For the 1960 Olympic Games in Rome, Guttmann brought 400 athletes to compete in the "Parallel Olympics", which became known as the first Paralympics. Since then, the Paralympics have been held in every Olympic year. Since the 1988 Summer Olympics in Seoul, South Korea, the host city for the Olympics has also played host to the Paralympics.  [D] In 2001 the International Olympic Committee (IOC) and the International Paralympic Committee (IPC) signed an agreement guaranteeing that host cities would be contracted to manage both the Olympic and Paralympic Games.   The agreement came into effect at the 2008 Summer Games in Beijing, and the 2010 Winter Games in Vancouver. Chairman of the London organising committee, Lord Coe, said about the 2012 Summer Paralympics and Olympics in London that,
We want to change public attitudes towards disability, celebrate the excellence of Paralympic sport and to enshrine from the very outset that the two Games are an integrated whole. 
In 2010, the Olympic Games were complemented by the Youth Games, which give athletes between the ages of 14 and 18 the chance to compete. The Youth Olympic Games were conceived by IOC president Jacques Rogge in 2001 and approved during the 119th Congress of the IOC.   The first Summer Youth Games were held in Singapore from 14–26 August 2010, while the inaugural Winter Games were hosted in Innsbruck, Austria, two years later.  These Games will be shorter than the senior Games; the summer version will last twelve days, while the winter version will last nine days.  The IOC allows 3,500 athletes and 875 officials to participate at the Summer Youth Games, and 970 athletes and 580 officials at the Winter Youth Games.   The sports to be contested will coincide with those scheduled for the senior Games, however there will be variations on the sports including mixed NOC and mixed gender teams as well as a reduced number of disciplines and events. 
From 241 participants representing 14 nations in 1896, the Games have grown to about 10,500 competitors from 204 nations at the 2012 Summer Olympics.  The scope and scale of the Winter Olympics is smaller. For example, Sochi hosted 2,873 athletes from 88 nations competing in 98 events during the 2014 Winter Olympics. During the Games most athletes and officials are housed in the Olympic Village. This village is intended to be a self-contained home for all the Olympic participants, and is furnished with cafeterias, health clinics, and locations for religious expression. 
The IOC allowed the formation of National Olympic Committees representing nations that did not meet the strict requirements for political sovereignty that other international organisations demand. As a result, colonies and dependencies are permitted to compete at Olympic Games. Examples of this include territories such as Puerto Rico, Bermuda, and Hong Kong, all of which compete as separate nations despite being legally a part of another country.  The current version of the Charter allows for the establishment of new National Olympic Committees to represent nations which qualify as "an independent State recognised by the international community".  Therefore, it did not allow the formation of National Olympic Committees for Sint Maarten and Curaçao when they gained the same constitutional status as Aruba in 2010, although the IOC had recognised the Aruban Olympic Committee in 1986.   After 2012, Netherlands Antilles athletes can choose to represent either the Netherlands or Aruba. 
Cost of the Games
The Oxford Olympics Study 2016 found that sports-related costs for the Summer Games since 1960 are on average US$5.2 billion and for the Winter Games $3.1 billion. This does not include wider infrastructure costs like roads, urban rail, and airports, which often cost as much or more than the sports-related costs. The most expensive Summer Games are Beijing at US$40-44  billion and the most expensive Winter Games are Sochi 2014 at US$51 billion.   As of 2016, costs per athlete are on average US$599,000 for the Summer Games and $1.3 million for the Winter Games. For London 2012, cost per athlete was $1.4 million; for Sochi 2014, $7.9 million. 
Where ambitious construction for the 1976 games in Montreal and 1980 games in Moscow had saddled organisers with expenses greatly in excess of revenues, 1984 host Los Angeles strictly controlled expenses by using existing facilities except a swim stadium and a velodrome that were paid for by corporate sponsors. The Olympic Committee led by Peter Ueberroth used some of the profits to endow the LA84 Foundation to promote youth sports in Southern California, educate coaches and maintain a sports library. The 1984 Summer Olympics are often considered the most financially successful modern Olympics. 
Budget overruns are common for the Games. Average overrun for Games since 1960 is 156% in real terms,  which means that actual costs turned out to be on average 2.56 times the budget that was estimated at the time of winning the bid to host the Games. Montreal 1976 had the highest cost overrun for Summer Games, and for any Games, at 720%; Lake Placid 1980 had the highest cost overrun for Winter Games, at 324%. London 2012 had a cost overrun of 76%, Sochi 2014 of 289%. 
Many economists are sceptical about the economic benefits of hosting the Olympic Games, emphasising that such "mega-events" often have large costs while yielding relatively few tangible benefits in the long run.  Conversely hosting (or even bidding for) the Olympics appears to increase the host country's exports, as the host or candidate country sends a signal about trade openness when bidding to host the Games.  Moreover, research suggests that hosting the Summer Olympics has a strong positive effect on the philanthropic contributions of corporations headquartered in the host city, which seems to benefit the local nonprofit sector. This positive effect begins in the years leading up to the Games and might persist for several years afterwards, although not permanently. This finding suggests that hosting the Olympics might create opportunities for cities to influence local corporations in ways that benefit the local nonprofit sector and civil society. 
The Games have also had significant negative effects on host communities; for example, the Centre on Housing Rights and Evictions reports that the Olympics displaced more than two million people over two decades, often disproportionately affecting disadvantaged groups.  The 2014 Winter Olympics in Sochi were the most expensive Olympic Games in history, costing in excess of US$50 billion. According to a report by the European Bank for Reconstruction and Development that was released at the time of the games, this cost will not boost Russia's national economy, but may attract business to Sochi and the southern Krasnodar region of Russia in the future as a result of improved services.  But by December 2014, The Guardian stated that Sochi "now feels like a ghost town", citing the spread-out nature of the stadiums and arenas, the still-unfinished construction, and the overall effects of Russia's political and economic turmoil.  Furthermore, at least four cities withdrew their bids for the 2022 Winter Olympics, citing the high costs or the lack of local support,  resulting in only a two-city race between Almaty, Kazakhstan and Beijing, China. Thus in July 2016, The Guardian stated that the biggest threat to the future of the Olympics is that very few cities want to host them.  Bidding for the 2024 Summer Olympics also became a two-city race between Paris and Los Angeles, so the IOC took the unusual step of simultaneously awarding both the 2024 Games to Paris and the 2028 Games to Los Angeles. 
International Olympic Committee
The Olympic Movement encompasses a large number of national and international sporting organisations and federations, recognised media partners, as well as athletes, officials, judges, and every other person and institution that agrees to abide by the rules of the Olympic Charter.  As the umbrella organisation of the Olympic Movement, the International Olympic Committee (IOC) is responsible for selecting the host city, overseeing the planning of the Olympic Games, updating and approving the sports program, and negotiating sponsorship and broadcasting rights. 
The Olympic Movement is made of three major elements:
- International Federations (IFs) are the governing bodies that supervise a sport at an international level. For example, the International Federation of Association Football ( FIFA) is the IF for association football, and the Fédération Internationale de Volleyball is the international governing body for volleyball. There are currently 35 IFs in the Olympic Movement, representing each of the Olympic sports. 
- National Olympic Committees (NOCs) represent and regulate the Olympic Movement within each country. For example, the United States Olympic Committee (USOC) is the NOC of the United States. There are currently 205 NOCs recognised by the IOC. 
- Organising Committees for the Olympic Games (OCOGs) are temporary committees responsible for the organisation of each Olympic Games. OCOGs are dissolved after each Games once the final report is delivered to the IOC. 
French and English are the official languages of the Olympic Movement. The other language used at each Olympic Games is the language of the host country (or languages, if a country has more than one official language apart from French or English). Every proclamation (such as the announcement of each country during the parade of nations in the opening ceremony) is spoken in these three (or more) languages, or the main two depending on whether the host country is an English or French speaking country. 
The IOC has often been criticised for being an intractable organisation, with several members on the committee for life. The presidential terms of Avery Brundage and Juan Antonio Samaranch were especially controversial. Brundage was president for over 20 years, and during his tenure he protected the Olympics from political involvement and the influence of advertising.  He was accused of both racism, for resisting exclusion of apartheid South Africa, and antisemitism.  Under the Samaranch presidency, the office was accused of both nepotism and corruption.  Samaranch's ties with the Franco regime in Spain were also a source of criticism. 
In 1998, it was reported that several IOC members had taken bribes from members of the Salt Lake City bid committee for the hosting of the 2002 Winter Olympics. Although nothing strictly illegal had been done, it was felt that the acceptance of the gifts was morally dubious. The IOC pursued an investigation which led to the resignation of four members and expulsion of six others. The scandal set off further reforms that changed the way host cities were selected, to avoid similar cases in the future. 
The 1999, it was reported that the Nagano Olympic bid committee had spent approximately $14 million to entertain the 62 IOC members and many of their companions. The precise figures are unknown since Nagano, after the IOC asked that the entertainment expenditures not be made public, destroyed the financial records.  
A BBC documentary entitled Panorama: Buying the Games, aired in August 2004, investigated the taking of bribes in the bidding process for the 2012 Summer Olympics.  The documentary claimed it was possible to bribe IOC members into voting for a particular candidate city. After being narrowly defeated in their bid for the 2012 Summer Games,  Parisian mayor Bertrand Delanoë specifically accused the British prime minister Tony Blair and the London Bid Committee (headed by former Olympic champion Sebastian Coe) of breaking the bid rules. He cited French president Jacques Chirac as a witness; Chirac gave guarded interviews regarding his involvement.  The allegation was never fully explored. The Turin bid for the 2006 Winter Olympics was also shrouded in controversy. A prominent IOC member, Marc Hodler, strongly connected with the rival bid of Sion, Switzerland, alleged bribery of IOC officials by members of the Turin Organising Committee. These accusations led to a wide-ranging investigation. The allegations also served to sour many IOC members against Sion's bid and potentially helped Turin to capture the host city nomination. 
In July 2012, the Anti-Defamation League called the continued refusal by the International Olympic Committee to hold a moment of silence at the opening ceremony for the eleven Israeli athletes killed by Palestinian terrorists at the 1972 Munich Olympics, "a continuing stubborn insensitivity and callousness to the memory of the murdered Israeli athletes." 
Under national organising committees
The Olympics have been commercialised to various degrees since the initial 1896 Summer Olympics in Athens, when a number of companies paid for advertising,  including Kodak.   In 1908, Oxo, Odol mouthwash and Indian Foot Powder became official sponsors of the London Olympic Games.    Coca-Cola sponsored the 1928 Summer Olympics, and has subsequently remained a sponsor to the current time.  Before the IOC took control of sponsorship, national organising committees were responsible for negotiating their own contracts for sponsorship and the use of the Olympic symbols. 
Under IOC control
The IOC originally resisted funding by corporate sponsors. It was not until the retirement of IOC president Avery Brundage, in 1972, that the IOC began to explore the potential of the television medium and the lucrative advertising markets available to them.  Under the leadership of Juan Antonio Samaranch the Games began to shift toward international sponsors who sought to link their products to the Olympic brand.  More than half of the Olympic committee's global sponsors are American companies. 
During the first half of the 20th century the IOC ran on a small budget.   As president of the IOC from 1952 to 1972, Avery Brundage rejected all attempts to link the Olympics with commercial interest.  Brundage believed the lobby of corporate interests would unduly impact the IOC's decision-making.  Brundage's resistance to this revenue stream meant the IOC left organising committees to negotiate their own sponsorship contracts and use the Olympic symbols.  When Brundage retired the IOC had US$2 million in assets; eight years later the IOC coffers had swelled to US$45 million.  This was primarily due to a shift in ideology toward expansion of the Games through corporate sponsorship and the sale of television rights.  When Juan Antonio Samaranch was elected IOC president in 1980 his desire was to make the IOC financially independent. 
The 1984 Summer Olympics became a watershed moment in Olympic history. The Los Angeles-based organising committee, led by Peter Ueberroth, was able to generate a surplus of US$225 million, which was an unprecedented amount at that time.  The organising committee had been able to create such a surplus in part by selling exclusive sponsorship rights to select companies.  The IOC sought to gain control of these sponsorship rights. Samaranch helped to establish The Olympic Programme (TOP) in 1985, in order to create an Olympic brand.  Membership in TOP was, and is, very exclusive and expensive. Fees cost US$50 million for a four-year membership.  Members of TOP received exclusive global advertising rights for their product category, and use of the Olympic symbol, the interlocking rings, in their publications and advertisements. 
Effect of television
The 1936 Summer Olympics in Berlin were the first Games to be broadcast on television, though only to local audiences.  The 1956 Winter Olympics were the first internationally televised Olympic Games,  and the following Winter Games had their broadcasting rights sold for the first time to specialised television broadcasting networks— CBS paid US$394,000 for the American rights,  and the European Broadcasting Union (EBU) allocated US$660,000.  In the following decades the Olympics became one of the ideological fronts of the Cold War. Superpowers jockeyed for political supremacy, and the IOC wanted to take advantage of this heightened interest via the broadcast medium.  The sale of broadcast rights enabled the IOC to increase the exposure of the Olympic Games, thereby generating more interest, which in turn created more appeal to advertisers time on television. This cycle allowed the IOC to charge ever-increasing fees for those rights.  For example, CBS paid US$375 million for the American broadcast rights of the 1998 Nagano Games,  while NBC spent US$3.5 billion for the American rights of all the Olympic Games from 2000 to 2012.  In 2011, NBC agreed to a $4.38 billion contract with the International Olympic Committee to broadcast the Olympics through the 2020 games, the most expensive television rights deal in Olympic history.  NBC then agreed to a $7.75 billion contract extension on May 7, 2014, to air the Olympics through the 2032 games.  NBC also acquired the American television rights to the Youth Olympic Games, beginning in 2014,  and the Paralympic Games for the 2014 and 2016 editions.  NBC is one of the major sources of revenue for the IOC. 
Viewership increased exponentially from the 1960s until the end of the century. This was due to the use of satellites to broadcast live television worldwide in 1964, and the introduction of colour television in 1968.  Global audience estimates for the 1968 Mexico City Games was 600 million, whereas at the Los Angeles Games of 1984, the audience numbers had increased to 900 million; that number swelled to 3.5 billion by the 1992 Summer Olympics in Barcelona.  However, at the 2000 Summer Games in Sydney, NBC drew the lowest U.S. ratings for any Summer or Winter Olympics since 1968.  This was attributed to two factors: one was the increased competition from cable channels, the second was the internet, which was able to display results and video in real time. Television companies were still relying on tape-delayed content, which was becoming outdated in the information era.  A drop in ratings meant that television studios had to give away free advertising time.  With such high costs charged to broadcast the Games, the added pressure of the internet, and increased competition from cable, the television lobby demanded concessions from the IOC to boost ratings.  The IOC responded by making a number of changes to the Olympic program. At the Summer Games, the gymnastics competition was expanded from seven to nine nights, and a Champions Gala was added to draw greater interest.  The IOC also expanded the swimming and diving programs, both popular sports with a broad base of television viewers.  Finally, the American television lobby, namely NBC, was able to dictate when certain events were held so that they could be broadcast live during prime time in the United States, such as swimming and figure skating.  The results of these efforts were mixed: ratings for the 2006 Winter Games were significantly lower than those for the 2002 Games, while there was a sharp increase in viewership for the 2008 Summer Olympics, and the 2012 Summer Games, where live broadcast in prime time on NBC were little, became the most watched event in US television history.   
The sale of the Olympic brand has been controversial. The argument is that the Games have become indistinguishable from any other commercialised sporting spectacle.  Specific criticism was levelled at the IOC for market saturation during the 1996 Atlanta and 2000 Sydney Games. The cities were awash in corporations and merchants attempting to sell Olympic-related wares.  The IOC indicated that they would address this to prevent spectacles of over-marketing at future Games.  Another criticism is that the Games are funded by host cities and national governments; the IOC incurs none of the cost, yet controls all the rights and profits from the Olympic symbols. The IOC also takes a percentage of all sponsorship and broadcast income.  Host cities continue to compete ardently for the right to host the Games, even though there is no certainty that they will earn back their investments.  Research has shown that trade is around 30 percent higher for countries that have hosted the Olympics. 
The Olympic Movement uses symbols to represent the ideals embodied in the Olympic Charter. The Olympic symbol, better known as the Olympic rings, consists of five intertwined rings and represents the unity of the five inhabited continents ( Africa, America, Asia, Australia and Europe). The coloured version of the rings—blue, yellow, black, green, and red—over a white field forms the Olympic flag. These colours were chosen because every nation had at least one of them on its national flag. The flag was adopted in 1914 but flown for the first time only at the 1920 Summer Olympics in Antwerp, Belgium. It has since been hoisted during each celebration of the Games.  
The Olympic motto, Citius, Altius, Fortius, a Latin expression meaning "Faster, Higher, Stronger" was proposed by Pierre de Coubertin in 1894 and has been official since 1924. The motto was coined by Coubertin's friend, the Dominican priest Henri Didon OP, for a Paris youth gathering of 1891. 
Coubertin's Olympic ideals are expressed in the Olympic creed:
The most important thing in the Olympic Games is not to win but to take part, just as the most important thing in life is not the triumph but the struggle. The essential thing is not to have conquered but to have fought well. 
Months before each Games, the Olympic Flame is lit in Olympia in a ceremony that reflects ancient Greek rituals. A female performer, acting as a priestess, ignites a torch by placing it inside a parabolic mirror which focuses the sun's rays; she then lights the torch of the first relay bearer, thus initiating the Olympic torch relay that will carry the flame to the host city's Olympic stadium, where it plays an important role in the opening ceremony.  Though the flame has been an Olympic symbol since 1928, the torch relay was only introduced at the 1936 Summer Games to promote the Third Reich.  
The Olympic mascot, an animal or human figure representing the cultural heritage of the host country, was introduced in 1968. It has played an important part of the Games' identity promotion since the 1980 Summer Olympics, when the Russian bear cub Misha reached international stardom. The mascot of the Summer Olympics in London was named Wenlock after the town of Much Wenlock in Shropshire. Much Wenlock still hosts the Wenlock Olympian Games, which were an inspiration to Pierre de Coubertin for the Olympic Games. 
As mandated by the Olympic Charter, various elements frame the opening ceremony of the Olympic Games. This ceremony takes place before the events have occurred.   Most of these rituals were established at the 1920 Summer Olympics in Antwerp.  The ceremony typically starts with the hoisting of the host country's flag and a performance of its national anthem.   The host nation then presents artistic displays of music, singing, dance, and theatre representative of its culture.  The artistic presentations have grown in scale and complexity as successive hosts attempt to provide a ceremony that outlasts its predecessor's in terms of memorability. The opening ceremony of the Beijing Games reportedly cost $100 million, with much of the cost incurred in the artistic segment. 
After the artistic portion of the ceremony, the athletes parade into the stadium grouped by nation. Greece is traditionally the first nation to enter in order to honour the origins of the Olympics. Nations then enter the stadium alphabetically according to the host country's chosen language, with the host country's athletes being the last to enter. During the 2004 Summer Olympics, which was hosted in Athens, Greece, the Greek flag entered the stadium first, while the Greek delegation entered last. Speeches are given, formally opening the Games. Finally, the Olympic torch is brought into the stadium and passed on until it reaches the final torch carrier, often a successful Olympic athlete from the host nation, who lights the Olympic flame in the stadium's cauldron.  
The closing ceremony of the Olympic Games takes place after all sporting events have concluded. Flag-bearers from each participating country enter the stadium, followed by the athletes who enter together, without any national distinction.  Three national flags are hoisted while the corresponding national anthems are played: the flag of the current host country; the flag of Greece, to honour the birthplace of the Olympic Games; and the flag of the country hosting the next Summer or Winter Olympic Games.  The president of the organising committee and the IOC president make their closing speeches, the Games are officially closed, and the Olympic flame is extinguished.  In what is known as the Antwerp Ceremony, the mayor of the city that organised the Games transfers a special Olympic flag to the president of the IOC, who then passes it on to the mayor of the city hosting the next Olympic Games.  The next host nation then also briefly introduces itself with artistic displays of dance and theatre representative of its culture. 
As is customary, the last medal presentation of the Games is held as part of the closing ceremony. Typically, the men's marathon medals are presented at the Summer Olympics,   while the cross-country skiing mass start medals are awarded at the Winter Olympics. 
A medal ceremony is held after each Olympic event is concluded. The winner, second and third-place competitors or teams stand on top of a three-tiered rostrum to be awarded their respective medals.  After the medals are given out by an IOC member, the national flags of the three medallists are raised while the national anthem of the gold medallist's country plays.  Volunteering citizens of the host country also act as hosts during the medal ceremonies, as they aid the officials who present the medals and act as flag-bearers.  While in the Summer Olympics this ceremony is held on the ground where the event is played,  in the Winter Games it is usually held in a special "plaza". 
The Olympic Games programme consists of 35 sports, 30 disciplines and 408 events. For example, wrestling is a Summer Olympic sport, comprising two disciplines: Greco-Roman and Freestyle. It is further broken down into fourteen events for men and four events for women, each representing a different weight class.  The Summer Olympics programme includes 26 sports, while the Winter Olympics programme features 15 sports.  Athletics, swimming, fencing, and artistic gymnastics are the only summer sports that have never been absent from the Olympic programme. Cross-country skiing, figure skating, ice hockey, Nordic combined, ski jumping, and speed skating have been featured at every Winter Olympics programme since its inception in 1924. Current Olympic sports, like badminton, basketball, and volleyball, first appeared on the programme as demonstration sports, and were later promoted to full Olympic sports. Some sports that were featured in earlier Games were later dropped from the programme. 
Olympic sports are governed by international sports federations (IFs) recognised by the IOC as the global supervisors of those sports. There are 35 federations represented at the IOC.  There are sports recognised by the IOC that are not included on the Olympic program. These sports are not considered Olympic sports, but they can be promoted to this status during a programme revision that occurs in the first IOC session following a celebration of the Olympic Games.   During such revisions, sports can be excluded or included in the programme on the basis of a two-thirds majority vote of the members of the IOC.  There are recognised sports that have never been on an Olympic programme in any capacity, including chess and surfing. 
In October and November 2004, the IOC established an Olympic Programme Commission, which was tasked with reviewing the sports on the Olympic programme and all non-Olympic recognised sports. The goal was to apply a systematic approach to establishing the Olympic programme for each celebration of the Games.  The commission formulated seven criteria to judge whether a sport should be included on the Olympic programme.  These criteria are history and tradition of the sport, universality, popularity of the sport, image, athletes' health, development of the International Federation that governs the sport, and costs of holding the sport.  From this study five recognised sports emerged as candidates for inclusion at the 2012 Summer Olympics: golf, karate, rugby union, roller sports and squash.  These sports were reviewed by the IOC Executive Board and then referred to the General Session in Singapore in July 2005. Of the five sports recommended for inclusion only two were selected as finalists: karate and squash.  Neither sport attained the required two-thirds vote and consequently they were not promoted to the Olympic programme.  In October 2009 the IOC voted to instate golf and rugby union as Olympic sports for the 2016 and 2020 Summer Olympic Games. 
The 114th IOC Session, in 2002, limited the Summer Games programme to a maximum of 28 sports, 301 events, and 10,500 athletes.  Three years later, at the 117th IOC Session, the first major programme revision was performed, which resulted in the exclusion of baseball and softball from the official programme of the 2012 London Games. Since there was no agreement in the promotion of two other sports, the 2012 programme featured just 26 sports.  The 2016 and 2020 Games will return to the maximum of 28 sports given the addition of rugby and golf. 
Amateurism and professionalism
The ethos of the aristocracy as exemplified in the English public school greatly influenced Pierre de Coubertin.  The public schools subscribed to the belief that sport formed an important part of education, an attitude summed up in the saying mens sana in corpore sano, a sound mind in a sound body. In this ethos, a gentleman was one who became an all-rounder, not the best at one specific thing. There was also a prevailing concept of fairness, in which practising or training was considered tantamount to cheating.  Those who practised a sport professionally were considered to have an unfair advantage over those who practised it merely as a hobby. 
The exclusion of professionals caused several controversies throughout the history of the modern Olympics. The 1912 Olympic pentathlon and decathlon champion Jim Thorpe was stripped of his medals when it was discovered that he had played semi-professional baseball before the Olympics. His medals were posthumously restored by the IOC in 1983 on compassionate grounds.  Swiss and Austrian skiers boycotted the 1936 Winter Olympics in support of their skiing teachers, who were not allowed to compete because they earned money with their sport and were thus considered professionals. 
As class structure evolved through the 20th century, the definition of the amateur athlete as an aristocratic gentleman became outdated.  The advent of the state-sponsored "full-time amateur athlete" of the Eastern Bloc countries further eroded the ideology of the pure amateur, as it put the self-financed amateurs of the Western countries at a disadvantage.  Beginning in the 1970s, amateurism requirements were gradually phased out of the Olympic Charter. After the 1988 Games, the IOC decided to make all professional athletes eligible for the Olympics, subject to the approval of the IFs. 
Near the end of the 1960s, the Canadian Amateur Hockey Association (CAHA) felt their amateur players could no longer be competitive against the Soviet team's full-time athletes and the other constantly improving European teams. They pushed for the ability to use players from professional leagues but met opposition from the IIHF and IOC. Avery Brundage, president of the IOC from 1952 to 1972, was opposed to the idea of amateur and professional players competing together. At the IIHF Congress in 1969, the IIHF decided to allow Canada to use nine non-NHL professional hockey players  at the 1970 World Championships in Montreal and Winnipeg, Manitoba, Canada.  The decision was reversed in January 1970 after Brundage said that ice hockey's status as an Olympic sport would be in jeopardy if the change was made.  In response, Canada withdrew from international ice hockey competition and officials stated that they would not return until "open competition" was instituted.   Günther Sabetzki became president of the IIHF in 1975 and helped to resolve the dispute with the CAHA. In 1976, the IIHF agreed to allow "open competition" between all players in the World Championships. However, NHL players were still not allowed to play in the Olympics until 1988, because of the IOC's amateur-only policy. 
Greece, Australia, France, and United Kingdom are the only countries to be represented at every Olympic Games since their inception in 1896. While countries sometimes miss an Olympics due to a lack of qualified athletes, some choose to boycott a celebration of the Games for various reasons. The Olympic Council of Ireland boycotted the 1936 Berlin Games, because the IOC insisted its team needed to be restricted to the Irish Free State rather than representing the entire island of Ireland. 
There were three boycotts of the 1956 Melbourne Olympics: the Netherlands, Spain, and Switzerland refused to attend because of the repression of the Hungarian uprising by the Soviet Union, but did send an equestrian delegation to Stockholm; Cambodia, Egypt, Iraq, and Lebanon boycotted the Games because of the Suez Crisis; and China (the "People's Republic of China") boycotted the Games because Taiwan was allowed to compete in the Games as the "Republic of China". 
In 1972 and 1976 a large number of African countries threatened the IOC with a boycott to force them to ban South Africa and Rhodesia, because of their segregationist regimes. New Zealand was also one of the African boycott targets, because its national rugby union team had toured apartheid-ruled South Africa. The IOC conceded in the first two cases, but refused to ban New Zealand on the grounds that rugby was not an Olympic sport.  Fulfilling their threat, twenty African countries were joined by Guyana and Iraq in a withdrawal from the Montreal Games, after a few of their athletes had already competed.  
Taiwan was excluded from the 1976 games by order of Pierre Elliott Trudeau, the prime minister of Canada. Trudeau's action was widely condemned as having brought shame on Canada for having succumbed to political pressure to keep the delegation from the Republic of China (ROC) from competing under that name.  The ROC refused a proposed compromise that would have still allowed them to use the ROC flag and anthem as long as the name was changed.  Taiwan did not participate again until 1984, when it returned under the name of Chinese Taipei and with a special flag and anthem. 
In 1980 and 1984, the Cold War opponents boycotted each other's Games. The United States and sixty-five other countries boycotted the Moscow Olympics in 1980 because of the Soviet invasion of Afghanistan. This boycott reduced the number of nations participating to 80, the lowest number since 1956.  The Soviet Union and 15 other nations countered by boycotting the Los Angeles Olympics of 1984, contending that they could not guarantee the safety of their athletes. Although a boycott led by the Soviet Union depleted the field in certain sports, 140 National Olympic Committees took part, which was a record at the time.  The fact that Romania, a Warsaw Pact country, opted to compete despite Soviet demands led to a warm reception of the Romanian team by the United States. When the Romanian athletes entered during the opening ceremonies, they received a standing ovation from the spectators, which comprised mostly U.S. citizens. The boycotting nations of the Eastern Bloc staged their own alternate event, the Friendship Games, in July and August.  
There had been growing calls for boycotts of Chinese goods and the 2008 Olympics in Beijing in protest of China's human rights record, and in response to Tibetan disturbances. Ultimately, no nation supported a boycott.   In August 2008, the government of Georgia called for a boycott of the 2014 Winter Olympics, set to be held in Sochi, Russia, in response to Russia's participation in the 2008 South Ossetia war.  
The Olympic Games have been used as a platform to promote political ideologies almost from its inception. Nazi Germany wished to portray the National Socialist Party as benevolent and peace-loving when they hosted the 1936 Games, though they used the Games to display Aryan superiority.  Germany was the most successful nation at the Games, which did much to support their allegations of Aryan supremacy, but notable victories by African American Jesse Owens, who won four gold medals, and Hungarian Jew Ibolya Csák, blunted the message.  The Soviet Union did not participate until the 1952 Summer Olympics in Helsinki. Instead, starting in 1928, the Soviets organised an international sports event called Spartakiads. During the interwar period of the 1920s and 1930s, communist and socialist organisations in several countries, including the United States, attempted to counter what they called the "bourgeois" Olympics with the Workers Olympics.   It was not until the 1956 Summer Games that the Soviets emerged as a sporting superpower and, in doing so, took full advantage of the publicity that came with winning at the Olympics.  Soviet Union's success might be attributed to a heavy state's investment in sports to fulfill its political agenda on an international stage.   
Individual athletes have also used the Olympic stage to promote their own political agenda. At the 1968 Summer Olympics in Mexico City, two American track and field athletes, Tommie Smith and John Carlos, who finished first and third in the 200 metres, performed the Black Power salute on the victory stand. The second-place finisher, Peter Norman of Australia, wore an Olympic Project for Human Rights badge in support of Smith and Carlos. In response to the protest, IOC president Avery Brundage told the United States Olympic Committee (USOC) to either send the two athletes home or withdraw the track and field team. The USOC opted for the former.  During the same Olympics, Czechoslovakian gymnast Věra Čáslavská announced her protest to the Soviet-led invasion of her home country after controversially receiving silver on the beam and a shared gold on the floor. During the Soviet anthem, Čáslavská turned her head down and to the right of the Soviet flag in order to make a statement over the invasion and the Soviet influence of the sport of gymnastics. Returning home, Čáslavská was made an outcast by the Soviet government and was banned from competition and travelling.
Currently, the government of Iran has taken steps to avoid any competition between its athletes and those from Israel. An Iranian judoka, Arash Miresmaeili, did not compete in a match against an Israeli during the 2004 Summer Olympics. Although he was officially disqualified for being overweight, Miresmaeli was awarded US$125,000 in prize money by the Iranian government, an amount paid to all Iranian gold medal winners. He was officially cleared of intentionally avoiding the bout, but his receipt of the prize money raised suspicion. 
Use of performance-enhancing drugs
In the early 20th century, many Olympic athletes began using drugs to improve their athletic abilities. For example, in 1904, Thomas Hicks, a gold medallist in the marathon, was given strychnine by his coach.  The only Olympic death linked to performance enhancing occurred at the 1960 Rome games. A Danish cyclist, Knud Enemark Jensen, fell from his bicycle and later died. A coroner's inquiry found that he was under the influence of amphetamines.  By the mid-1960s, sports federations started to ban the use of performance-enhancing drugs; in 1967 the IOC followed suit. 
According to British journalist Andrew Jennings, a KGB colonel stated that the agency's officers had posed as anti-doping authorities from the International Olympic Committee to undermine doping tests and that Soviet athletes were "rescued with [these] tremendous efforts".  On the topic of the 1980 Summer Olympics, a 1989 Australian study said "There is hardly a medal winner at the Moscow Games, certainly not a gold medal winner, who is not on one sort of drug or another: usually several kinds. The Moscow Games might as well have been called the Chemists' Games." 
Documents obtained in 2016 revealed the Soviet Union's plans for a statewide doping system in track and field in preparation for the 1984 Summer Olympics in Los Angeles. Dated prior to the country's decision to boycott the Games, the document detailed the existing steroids operations of the program, along with suggestions for further enhancements.  The communication, directed to the Soviet Union's head of track and field, was prepared by Dr. Sergei Portugalov of the Institute for Physical Culture. Portugalov was also one of the main figures involved in the implementation of the Russian doping program prior to the 2016 Summer Olympics. 
The first Olympic athlete to test positive for the use of performance-enhancing drugs was Hans-Gunnar Liljenwall, a Swedish pentathlete at the 1968 Summer Olympics, who lost his bronze medal for alcohol use.  One of the most publicised doping-related disqualifications occurred after the 1988 Summer Olympics where Canadian sprinter, Ben Johnson (who won the 100-metre dash) tested positive for stanozolol. His gold medal was later stripped and awarded to the American runner-up Carl Lewis, who himself had tested positive for banned substances prior to the Olympics. 
In 1999 the IOC formed the World Anti-Doping Agency (WADA) in an effort to systematise the research and detection of performance-enhancing drugs. There was a sharp increase in positive drug tests at the 2000 Summer Olympics and 2002 Winter Olympics. Several medallists in weightlifting and cross-country skiing were disqualified because of doping offences. During the 2006 Winter Olympics, only one athlete failed a drug test and had a medal revoked. The IOC-established drug testing regimen (now known as the Olympic Standard) has set the worldwide benchmark that other sporting federations attempt to emulate.  During the Beijing games, 3,667 athletes were tested by the IOC under the auspices of the World Anti-Doping Agency. Both urine and blood tests were used to detect banned substances. Several athletes were barred from competition by their National Olympic Committees prior to the Games; only three athletes failed drug tests while in competition in Beijing.   In London over 6,000 Olympic and Paralympic athletes were tested. Prior to the Games 107 athletes tested positive for banned substances and were not allowed to compete.   During and after the Games eight athletes tested positive for a banned substance and were suspended, including shot putter Nadzeya Ostapchuk, who was stripped of her gold medal. 
Russian doping scandal
Women were first allowed to compete at the 1900 Summer Olympics in Paris, but at the 1992 Summer Olympics 35 countries were still only fielding all-male delegations.  This number dropped rapidly over the following years. In 2000, Bahrain sent two women competitors for the first time: Fatema Hameed Gerashi and Mariam Mohamed Hadi Al Hilli.  In 2004, Robina Muqimyar and Fariba Rezayee became the first women to compete for Afghanistan at the Olympics.  In 2008, the United Arab Emirates sent female athletes ( Maitha Al Maktoum competed in taekwondo, and Latifa Al Maktoum in equestrian) to the Olympic Games for the first time. Both athletes were from Dubai's ruling family. 
By 2010, only three countries had never sent female athletes to the Games: Brunei, Saudi Arabia, and Qatar. Brunei had taken part in only three celebrations of the Games, sending a single athlete on each occasion, but Saudi Arabia and Qatar had been competing regularly with all-male teams. In 2010, the International Olympic Committee announced it would "press" these countries to enable and facilitate the participation of women for the 2012 Summer Olympics. Anita DeFrantz, chair of the IOC's Women and Sports Commission, suggested that countries be barred if they prevented women from competing. Shortly thereafter, the Qatar Olympic Committee announced that it "hoped to send up to four female athletes in shooting and fencing" to the 2012 Summer Games in London.
In 2008, Ali Al-Ahmed, director of the Institute for Gulf Affairs, likewise called for Saudi Arabia to be barred from the Games, describing its ban on women athletes as a violation of the International Olympic Committee charter. He noted: "For the last 15 years, many international nongovernmental organisations worldwide have been trying to lobby the IOC for better enforcement of its own laws banning gender discrimination. ... While their efforts did result in increasing numbers of women Olympians, the IOC has been reluctant to take a strong position and threaten the discriminating countries with suspension or expulsion."  In July 2010, The Independent reported: "Pressure is growing on the International Olympic Committee to kick out Saudi Arabia, who are likely to be the only major nation not to include women in their Olympic team for 2012. ... Should Saudi Arabia ... send a male-only team to London, we understand they will face protests from equal rights and women's groups which threaten to disrupt the Games". 
At the 2012 Olympic Games in London, Great Britain, for the first time in Olympic history, every country competing included female athletes.  Saudi Arabia included two female athletes in its delegation; Qatar, four; and Brunei, one ( Maziah Mahusin, in the 400m hurdles). Qatar made one of its first female Olympians, Bahiya al-Hamad (shooting), its flagbearer at the 2012 Games,  and runner Maryam Yusuf Jamal of Bahrain became the first Gulf female athlete to win a medal when she won a bronze for her showing in the 1500 m race. 
The only sport on the Olympic programme that features men and women competing together is the equestrian disciplines. There is no "Women's Eventing", or 'Men's Dressage'. As of 2008, there were still more medal events for men than women. With the addition of women's boxing to the programme in the 2012 Summer Olympics, however, female athletes were able to compete in all the same sports as men.  In the winter Olympics, women are still unable to compete in the Nordic combined.  There are currently two Olympic events in which male athletes may not compete: synchronised swimming and rhythmic gymnastics.
War and terrorism
Three Olympiads had to pass without a celebration of the Games because of war: the 1916 Games were cancelled because of World War I, and the summer and winter games of 1940 and 1944 were cancelled because of World War II. The Russo-Georgian War between Georgia and Russia erupted on the opening day of the 2008 Summer Olympics in Beijing. Both President Bush and Prime Minister Putin were attending the Olympics at that time and spoke together about the conflict at a luncheon hosted by Chinese president Hu Jintao.  When Nino Salukvadze of Georgia won the bronze medal in the 10 metre air pistol competition, she stood on the medal podium with Natalia Paderina, a Russian shooter who had won the silver. In what became a much-publicised event from the Beijing Games, Salukvadze and Paderina embraced on the podium after the ceremony had ended. 
Terrorism most directly affected the Olympic Games in 1972. When the Summer Games were held in Munich, Germany, eleven members of the Israeli Olympic team were taken hostage by the Palestinian terrorist group Black September in what is now known as the Munich massacre. The terrorists killed two of the athletes soon after they had taken them hostage and killed the other nine during a failed liberation attempt. A German police officer and five terrorists also perished.  Following the selection of Barcelona, Spain to host the 1992 Summer Olympics, the separatist ETA terrorist organisation launched attacks in the region, including the 1991 Vic bombing that killed ten people in a town that would also hold events.  
Terrorism affected the last two Olympic Games held in the United States. During the Summer Olympics in 1996 in Atlanta, Georgia, a bomb was detonated at the Centennial Olympic Park, which killed two and injured 111 others. The bomb was set by Eric Rudolph, an American domestic terrorist, who is currently serving a life sentence for the bombing.  The 2002 Winter Olympics in Salt Lake City, Utah, took place just five months after the September 11 attacks, which meant a higher level of security than ever before provided for an Olympic Games. The opening ceremonies of the Games featured symbols of the day's events. They included the flag that flew at Ground Zero, NYPD officer Daniel Rodríguez singing " God Bless America", and honour guards of NYPD and FDNY members. The events of that day have made security at the Olympic Games an increasing concern for Olympic planners. 
The Olympic Games have been criticised as upholding (and in some cases increasing) the colonial policies and practices of some host nations and cities either in the name of the Olympics by associated parties or directly by official Olympic bodies, such as the International Olympic Committee, host organising committees and official sponsors. Critics have argued that the Olympics have engaged in or caused erroneous anthropological and colonial knowledge production, erasure, commodification  and appropriation of indigenous ceremonies and symbolism, theft and inappropriate display of indigenous objects, further encroachment on and support of the theft of indigenous lands, and neglect and/or intensification of poor social conditions for indigenous peoples. Such practices have been observed at the 1904 Summer Olympics in St. Louis, Missouri; the 1976 Summer Olympics in Montreal, Quebec; the 1988 Winter Olympics in Calgary, Alberta; and the 2010 Winter Olympics in Vancouver, British Columbia.
IOC rules for citizenship
The Olympic Charter requires that an athlete be a national of the country for which they compete. Dual nationals may compete for either country, as long as three years have passed since the competitor competed for the former country. However, if the NOCs and IF involved agree, then the IOC Executive Board may reduce or cancel this period.  This waiting period exists only for athletes who previously competed for one nation and want to compete for another. If an athlete gains a new or second nationality, then they do not need to wait any designated amount of time before participating for the new or second nation. The IOC is only concerned with issues of citizenship and nationality after individual nations have granted citizenship to athletes. 
Reasons for changing citizenship
Athletes will sometimes become citizens of a different nation so they are able to compete in the Olympics. This is often because they are drawn to sponsorships or training facilities in such places as the United States. It could also be because an athlete is unable to qualify from within their original country. The athlete may not qualify because there are already qualified athletes in the athlete's home country. Between 1992 and 2008, about fifty athletes emigrated to the United States to compete on the US Olympic team after having previously competed for another nation. 
Citizenship changes and disputes
One of the most famous cases of changing nationality for the Olympics was Zola Budd, a South African runner who emigrated to the United Kingdom because there was an apartheid-era ban on the Olympics in South Africa. Budd was eligible for British citizenship because her grandfather was born in Britain, but British citizens accused the government of expediting the citizenship process for her. 
Other notable examples include Kenyan runner Bernard Lagat, who became a United States citizen in May 2004. The Kenyan constitution required that one renounce their Kenyan citizenship when they became a citizen of another nation. Lagat competed for Kenya in the 2004 Athens Olympics even though he had already become a United States citizen. According to Kenya, he was no longer a Kenyan citizen, jeopardising his silver medal. Lagat said he started the citizenship process in late 2003 and did not expect to become an American citizen until after the Athens games. 
Champions and medallists
The athletes or teams who place first, second, or third in each event receive medals. The winners receive gold medals, which were solid gold until 1912, then made of gilded silver and now gold-plated silver. Every gold medal however must contain at least six grams of pure gold.  The runners-up receive silver medals and the third-place athletes are awarded bronze medals. In events contested by a single-elimination tournament (most notably boxing), third place might not be determined and both semifinal losers receive bronze medals. At the 1896 Olympics only the first two received a medal; silver for first and bronze for second. The current three-medal format was introduced at the 1904 Olympics.  From 1948 onward athletes placing fourth, fifth, and sixth have received certificates, which became officially known as victory diplomas; in 1984 victory diplomas for seventh- and eighth-place finishers were added. At the 2004 Summer Olympics in Athens, the gold, silver, and bronze medal winners were also given olive wreaths.  The IOC does not keep statistics of medals won on a national level (except for team sports), but NOCs and the media record medal statistics as a measure of success. 
Nations at the Summer Olympics
As of the 2016 Games in Rio de Janeiro, all of the current 206 NOCs and 19 obsolete NOCs have participated in at least one edition of the Summer Olympics. Competitors from Australia, France, [A] Great Britain, [B] Greece, and Switzerland [C] have competed in all twenty-eight Summer Olympic Games. Athletes competing under the Olympic flag, Mixed Teams and the Refugee Team have between them competed at six Games.
Nations at the Winter Olympics
119 NOCs (110 of the current 206 NOCs and 9 obsolete NOCs) have participated in at least one Winter Games, and athletes from fournteen nations ( Austria, Canada, Czech Republic, Finland, France, Great Britain, Hungary, Italy, Norway, Poland, Slovakia, Sweden, Switzerland, and the United States) have participated in all twenty-three Winter Games to date.
Host nations and cities
The host city for an Olympic Games is usually chosen seven to eight years ahead of their celebration.  The process of selection is carried out in two phases that span a two-year period. The prospective host city applies to its country's National Olympic Committee; if more than one city from the same country submits a proposal to its NOC, the national committee typically holds an internal selection, since only one city per NOC can be presented to the International Olympic Committee for consideration. Once the deadline for submission of proposals by the NOCs is reached, the first phase (Application) begins with the applicant cities asked to complete a questionnaire regarding several key criteria related to the organisation of the Olympic Games.  In this form, the applicants must give assurances that they will comply with the Olympic Charter and with any other regulations established by the IOC Executive Committee.  The evaluation of the filled questionnaires by a specialised group provides the IOC with an overview of each applicant's project and their potential to host the Games. On the basis of this technical evaluation, the IOC Executive Board selects the applicants that will proceed to the candidature stage. 
Once the candidate cities are selected, they must submit to the IOC a bigger and more detailed presentation of their project as part of a candidature file. Each city is thoroughly analysed by an evaluation commission. This commission will also visit the candidate cities, interviewing local officials and inspecting prospective venue sites, and submit a report on its findings one month prior to the IOC's final decision. During the interview process the candidate city must also guarantee that it will be able to fund the Games.  After the work of the evaluation commission, a list of candidates is presented to the General Session of the IOC, which must assemble in a country that does not have a candidate city in the running. The IOC members gathered in the Session have the final vote on the host city. Once elected, the host city bid committee (together with the NOC of the respective country) signs a Host City Contract with the IOC, officially becoming an Olympic host nation and host city. 
By 2016, the Olympic Games will have been hosted by 44 cities in 23 countries, but by cities outside Europe and North America on only eight occasions. Since the 1988 Summer Olympics in Seoul, South Korea, the Olympics have been held in Asia or Oceania four times, a sharp increase compared to the previous 92 years of modern Olympic history. The 2016 Games in Rio de Janeiro were the first Olympics for a South American country. No bids from countries in Africa have succeeded.
The United States has hosted eight Olympic Games, four Summer and four Winter, more than any other nation. The British capital London holds the distinction of hosting three Olympic Games, all Summer, more than any other city. The other nations hosting the Summer Games twice are Germany, Australia, France and Greece. The other cities hosting the Summer Games twice are Los Angeles, Paris and Athens. With the 2020 Summer Olympic Games, Japan and Tokyo, respectively, will hold these statuses.
In addition to the United States, nations hosting multiple Winter Games are France with three, while Switzerland, Austria, Norway, Japan, Canada and Italy have hosted twice. Among host cities, Lake Placid, Innsbruck and St. Moritz have played host to the Winter Olympic Games more than once, each holding that honour twice. The most recent Winter Games were held in Pyeongchang in 2018, South Korea's first Winter Olympics and second Olympics overall (including the 1988 Summer Olympics in Seoul).
- a Sources are inconsistent regarding Albert Corey's participation for France in 1904. Although the Games report refers to Corey as a "Frenchman wearing the colors of the Chicago Athletic Association",  the IOC attributes his medal in the marathon to the United States instead of France, and in contradiction, the medal in the four mile team race to a mixed team composed of athletes from multiple nations instead of just the United States. 
- a All three 'British' athletes in 1904 were from Ireland, which at the time was part of the United Kingdom of Great Britain and Ireland. No athletes from modern Great Britain took part. The British Olympic Association was not founded until 1905. 
- a Switzerland participated in the equestrian events of the 1956 Games held in Stockholm in June,  but did not attend the Games in Melbourne later that year. 
- a The 1988 Winter Paralympics were in Innsbruck, Austria, whereas the 1988 Winter Olympics were in Calgary, Canada. 
- With English, French is the second official language of the Olympic Movement.
- "Jeux Olympiques – Sports, Athlètes, Médailles, Rio 2016". International Olympic Committee. 2018-10-22.
- "Overview of Olympic Games". Encyclopædia Britannica. Retrieved 4 June 2008.
- "No Boycott Blues". olympic.org. Retrieved 6 January 2017.
- Swaddling 2000, p. 54
- "The Olympic Truce – Myth and Reality by Harvey Abrams". Classics Technology Center, AbleMedia.com. Retrieved 12 February 2013.
- Young 2004, p. 12.
- Pausanias, "Elis 1", VII, p. 7, 9, 10; Pindar, "Olympian 10", pp. 24–77
- Richardson 1992, p. 227.
- Young 2004, pp. 12–13.
- Pausanias, "Elis 1", VII, p. 9; Pindar, "Olympian 10", pp. 24–77
- "Olympic Games". Encyclopædia Britannica. Retrieved 29 April 2009. (Registration required (help)).
- Crowther 2007, pp. 59–61.
- "Ancient Olympic Events". Perseus Project of Tufts University. Retrieved 29 April 2009.
- Golden 2009, p. 24.
- Burkert 1983, p. 95.
- Swaddling 1999, pp. 90–93.
- Olympic Museum, "The Olympic Games in Antiquity", p. 2
- However, Theodosius' decree contains no specific reference to Olympia ( Crowther 2007, p. 54).
- Crowther 2007, p. 54.
- 400 Years of Olimpick Passion, Robert Dover's Games Society, archived from the original on 6 June 2010, retrieved 4 June 2010
- "Histoire et évolution des Jeux olympiques". Potentiel (in French). 2005. Archived from the original on 26 April 2011. Retrieved 31 January 2009.
- Findling, John E. & Pelle, Kimberly P. (2004). Encyclopedia of the Modern Olympic Movement. London: Greenwood Press. ISBN 0-275-97659-9
- Young 2004, p. 144.
- Young 1996, p. 28.
- Matthews 2005, pp. 53–54.
- Weiler 2004.
- Girginov & Parry 2005, p. 38
- Young 1996, p. 24.
- "Much Wenlock & the Olympian Connection". Wenlock Olympian Society. Archived from the original on 23 January 2009. Retrieved 31 January 2009.
- Young 1996, p. 1.
- Young 1996, p. 14.
- Young 1996, pp. 2, 13–23, 81.
- Young 1996, p. 44.
- "Rugby School motivated founder of Games". Sports Illustrated. Reuters. 7 July 2004. Archived from the original on 23 August 2004. Retrieved 4 February 2009.
- Coubertin et al. 1897, p. 8, Part 2.
- Young 1996, pp. 100–105.
- "Athens 1896". The International Olympic Committee. Retrieved 8 February 2010.
- Young 1996, p. 117.
- de Martens, Frédéric (1893). Mémoire sur le conflit entre la Grèce et la Roumanie concernant l'affaire Zappa (in French). Athens: [printer Anestis Constantinides]. Retrieved 2 August 2017.
- Streit, Geōrgios S. (1894). L'affaire Zappa; Conflit Gréco-Roumain (in French). Paris: L. Larose. Retrieved 2 August 2017.
- Young 1996, p. 128.
- "1896 Athina Summer Games". Sports Reference. Retrieved 31 January 2009.
- "St. Louis 1904 – Overview". ESPN. Retrieved 31 January 2009.
- "1906 Olympics mark 10th anniversary of the Olympic revival". Canadian Broadcasting Centre. 28 May 2008. Archived from the original on 31 July 2008. Retrieved 31 January 2009.
- "Chamonix 1924". International Olympic Committee. Archived from the original on 2 August 2008. Retrieved 31 January 2009.
- "Winter Olympics History". Utah Athletic Foundation. Archived from the original on 12 January 2009. Retrieved 31 January 2009.
- Findling & Pelle 2004, p. 405.
- "History of the Paralympics". BBC Sport. 4 September 2008. Retrieved 2 February 2009.
- "History of the Paralympic Games". Government of Canada. Archived from the original on 12 March 2010. Retrieved 7 April 2010.
- "IPC-IOC Cooperation". International Paralympic Committee. Archived from the original on 19 May 2012. Retrieved 3 May 2010.
- Gibson, Owen (4 May 2010). "Sainsbury's announces sponsorship of 2012 Paralympics". The Guardian. London.
- "Rogge wants Youth Olympic Games". BBC Sport. 19 March 2007. Retrieved 2 February 2009.
- Rice, John (5 July 2007). "IOC approves Youth Olympics; first set for 2010". USA Today. Associated Press. Retrieved 2 February 2009.
- "Innsbruck is the host city for the first Winter Youth Olympic Games". The Vancouver Organizing Committee for the 2010 Olympic and Paralympic Winter Games. 12 December 2008. Retrieved 30 March 2009.
- "IOC to Introduce Youth Olympic Games in 2010". CRIenglish.com. 25 April 2007. Retrieved 29 January 2009.
- "IOC session: A "go" for Youth Olympic Games". International Olympic Committee. 5 July 2007. Archived from the original on 21 August 2008. Retrieved 2 February 2009.
- Wade, Stephen (25 April 2007). "No kidding: Teens to get Youth Olympic Games". USA Today. Retrieved 27 August 2008.
- Michaelis, Vicky (5 July 2007). "IOC votes to start Youth Olympics in 2010". USA Today. Retrieved 2 February 2009.
- "London 2012". International Olympic Committee. Retrieved 12 July 2012.
- "Beijing to build convenient Olympic village". The Beijing Organizing Committee for the Games of the XXIX Olympiad. Archived from the original on 14 September 2008. Retrieved 4 May 2009.
- "Olympic Charter" (PDF). International Olympic Committee. p. 61. Archived from the original (PDF) on 23 July 2011. Retrieved 28 July 2011.
- "The Olympic Charter". International Olympic Committee. Archived from the original on 2 May 2013. Retrieved 17 July 2012.
- "Executive Board concludes first meeting of the new year". olympic.org ("Official website of the Olympic movement"). 13 January 2011. Retrieved 13 January 2011.
- "Curtain comes down on 123rd IOC Session". International Olympic Committee. Retrieved 3 July 2012.
- "Working meeting between the IOC and the NOCs of the Netherlands Antilles, Aruba and the Netherlands". olympic.org ("Official website of the Olympic movement"). 1 July 2011. Retrieved 23 August 2012.
- "Beijing Olympics to cost China 44,000,000,000 dollars". Pravda News. 2008-06-08. Retrieved 2014-02-12.
- Gibson, Owen (2013-10-09). "Sochi 2014: the costliest Olympics yet but where has all the money gone?". The Guardian. Retrieved 2014-02-12.
- Flyvbjerg, Bent; Stewart, Allison; Budzier, Alexander (2016). The Oxford Olympics Study 2016: Cost and Cost Overrun at the Games. Saïd Business School, University of Oxford. SSRN 2804554.
- Abrahamson, Alan (25 July 2004). "LA the Best Site, Bid Group Insists; Olympics: Despite USOC rejection". Los Angeles Times. Retrieved 17 August 2008.
- Leahy, Joe (7 July 2016). "Brazil's Olympic costs running 51% over budget, report warns". Financial Times. Retrieved 23 July 2017.
- Greenwell M (August 2016).
"Olympics Everywhere". Argument. WIRED (Paper). p. 19.
...hosting the Olympics is almost always a financial disaster for cities in the long term.... Indeed, economists are uncommonly unanimous that hosting the Olympics is a bad bet.
- Rose AK, Spiegel MM (19 January 2011). "The Olympic Effect". The Economic Journal. 121 (553): 652–77. doi: 10.1111/j.1468-0297.2010.02407.x. (Subscription required (help)).
- Tilcsik A, Marquis C (1 February 2013). "Punctuated Generosity: How Mega-events and Natural Disasters Affect Corporate Philanthropy in U.S. Communities" (PDF). Administrative Science Quarterly. 58 (1): 111–48. doi: 10.1177/0001839213475800. SSRN 2028982 – via Social Science Research Network.
- Glynn, M. A. (2008). "Configuring the field of play: how hosting the Olympic Games impacts civic community." Journal of Management Studies, 45(6), 1117–1146.
- "The Economic Impact Of The Winter Olympics: Not Great For Russia But Sochi Stands To Gain". International Business Times. 8 February 2014. Retrieved 10 February 2014.
- "The Economic Impact Of The Winter Olympics: Not Great For Russia But Sochi Stands To Gain". The Guardian. 17 December 2014. Retrieved 10 January 2014.
- Abend, Lisa (3 October 2014). "Why Nobody Wants to Host the 2022 Winter Olympics". Time. Retrieved 10 January 2014.
- "Revealed: the biggest threat to the future of the Olympic Games". The Guardian. 27 July 2016. Retrieved 30 July 2016.
- "IOC Makes Historic Decision in Agreeing to Award 2024 and 2028 Olympic Games Simultaneously". IOC. Retrieved 1 August 2017.
- "The Olympic Movement". International Olympic Committee. Retrieved 2 May 2009.
- "Roles and responsibilities during the Olympic Games" (PDF). International Olympic Committee. February 2008. pp. 1–2. Archived from the original (PDF) on 29 April 2011. Retrieved 2 May 2009.
- "For the Good of the Athletes". The Beijing Organizing Committee for the Games of the XXIX Olympiad. 31 October 2007. Archived from the original on 23 January 2009. Retrieved 4 February 2009.
- "IOC Factsheet" (PDF). International Olympic Committee. Archived from the original (PDF) on 29 April 2011. Retrieved 2 February 2009.
- "Organising Committees for the Olympic Games". Olympic Games. Retrieved 18 July 2012.
- Olympic Charter 2007, p. 53, Rule 24.
- Maraniss 2008, pp. 52–60.
- Maraniss 2008, pp. 60–69.
- "Samaranch Defends Nominating Son for IOC Post". CBC Sports. 18 May 2001. Archived from the original on 5 December 2008. Retrieved 4 February 2009.
- Riding, Alan (30 June 1992). "Olympics:Barcelona Profile; Samaranch, Under the Gun Shoots Back". The New York Times. Retrieved 30 January 2009.
- Abrahamson, Alan (6 December 2003). "Judge Drops Olympic Bid Case". Los Angeles Times. Retrieved 21 March 2009.
- Jordan, Mary; Sullivan, Kevin (21 January 1999), "Nagano Burned Documents Tracing '98 Olympics Bid", Washington Post, pp. A1, retrieved 20 August 2016
- Macintyre, Donald (1 February 1999). "Japan's Sullied Bid". Time Magazine. Retrieved 20 August 2016.
- Rowlatt, Justin (29 July 2004). "Buying the Games". BBC. Retrieved 16 April 2009.
- Zinser, Lynn (7 July 2005). "London Wins 2012 Olympics New York Lags". The New York Times. Retrieved 4 February 2009.
- "Paris Mayor Slams London Tactics". Sporting Life. UK. Archived from the original on 15 May 2011. Retrieved 4 February 2009.
- Berkes, Howard (7 February 2006). "How Turin got the Games". NPR. Retrieved 4 February 2009.
- "Olympic Committee's Refusal to Honor Munich 11 Mired in 'Stubborn Insensitivity and Callousness'". ADL. Archived from the original on 23 June 2013. Retrieved 26 January 2013.
- "Marketing Fact File, International Olympic Committee, 2011 edition, page 18, accessed 2015-12-22" (PDF). 2018-07-04.
- "Kodak to end Olympics sponsorship after 2008 games". Reuters. Reuters. 12 October 2007.
- "No more Kodak moments in the Olympics".
- "Wildly interesting facts about London you never knew, until now". ITV News.
- "OXO – About Us".
- Alex (2013-02-05). "Form and Surface: Odol".
- Cooper-Chen 2005, p. 231.
- "Issues of the Olympic Games". Olympic Primer. LA84 Foundation of Los Angeles. Archived from the original on 25 April 2009. Retrieved 30 March 2009.
- "Fewer Russians Could Be a Windfall for U.S. Olympic Business". The New York Times. 7 December 2017. Retrieved 5 February 2018.
- Buchanon & Mallon 2006, p. ci.
- Findling & Pelle 2004, p. 209.
- Slack 2004, p. 194.
- "Berlin 1936". International Olympic Committee. Archived from the original on 22 August 2008. Retrieved 31 March 2009.
- "Cortina d'Ampezzo". International Olympic Committee. Archived from the original on 22 August 2008. Retrieved 31 March 2009.
- Slack 2004, p. 192.
- Gershon 2000, p. 17.
- Anthony Crupi (June 7, 2011). "Update: NBC Bids $4.38 Billion for Olympic Gold". Ad Week. Retrieved June 7, 2011.
- "Olympics on NBC through 2032". USA Today. Gannett Company. May 7, 2014.
- "Youth Olympics on NBC through 2032". NBC Sports. August 12, 2014.
- "Paralympics on NBC in 2014 and 2016". NBC Sports. September 24, 2013.
- Whannel, G. (1984) The television spectacular in A. Tomlinson & G. Whannel (Eds.), Five-ring circus (pp. 30–43). London: Pluto Press
- Tomlinson 2005, p. 14.
- "World Series TV ratings slump". CBS News. Associated Press. 27 October 2000. Retrieved 4 May 2009.
- Walters, Walters (2 October 2000). "All fall down". Sports Illustrated. Archived from the original on 29 April 2011. Retrieved 2 April 2009.
- Carter, Bill; Sandomir, Richard (17 August 2008). "A Surprise Winner at the Olympic Games in Beijing: NBC". The New York Times. Retrieved 2 April 2009.
- Slack 2004, pp. 16–18.
- Slack 2004, p. 17.
- Cooper-Chen 2005, p. 230.
- Woods 2007, p. 146.
- "London Olympics 2012 Ratings: Most Watched Event In TV History". The Huffington Post. 13 August 2012. Retrieved 12 July 2013.
- Buchanon & Mallon 2006, p. cii.
- Slack 2004, pp. 194–195.
- Federal Reserve Bank of San Francisco, The Olympic Effect, March 2009
- "The Olympic Symbols" (PDF). International Olympic Committee. Archived from the original (PDF) on 26 April 2009. Retrieved 4 February 2009.
- Lennartz, Karl (2002). "The Story of the Rings" (PDF). Journal of Olympic History. 10: 29–61.
- "Sport athlétique", 14 mars 1891: "... dans une éloquente allocution il a souhaité que ce drapeau les conduise 'souvent à la victoire, à la lutte toujours'. Il a dit qu'il leur donnait pour devise ces trois mots qui sont le fondement et la raison d'être des sports athlétiques: citius, altius, fortius, 'plus vite, plus haut, plus fort'.", cited in Hoffmane, Simone La carrière du père Didon, Dominicain. 1840–1900, Doctoral thesis, Université de Paris IV – Sorbonne, 1985, p. 926; cf. Michaela Lochmann, Les fondements pédagogiques de la devise olympique "citius, altius, fortius"
- "The Olympic flame and the torch relay" (PDF). Olympic Museum. International Olympic Committee. 2007. p. 6. Archived from the original (PDF) on 26 April 2009. Retrieved 4 February 2009.
- "IOC Investigation". Real Sports with Bryant Gumbel. Season 22. Episode 7. 26 July 2016. HBO.
- "Olympic Summer Games Mascots from Munich 1972 to London 2012" (PDF). International Olympic Committee. 1 January 2013. Retrieved 13 July 2013.
- "Fact sheet: Opening Ceremony of the Summer Olympic Games" (PDF). International Olympic Committee. February 2008. Archived from the original (PDF) on 29 April 2011. Retrieved 14 August 2008.
- "Fact sheet: Opening Ceremony of the Winter Olympic Games" (PDF). International Olympic Committee. February 2008. Archived from the original (PDF) on 26 April 2009. Retrieved 14 August 2008.
- "The development of the Games – Between festival and tradition" (PDF). The Modern Olympic Games (PDF). International Olympic Committee. p. 5. Archived from the original (PDF) on 26 April 2009. Retrieved 29 August 2008.
- "Beijing Dazzles: Chinese History, on Parade as Olympics Begin". Canadian Broadcasting Centre. 8 August 2008. Archived from the original on 6 September 2008. Retrieved 9 September 2008.
- "Closing Ceremony Factsheet" (PDF). The International Olympic Committee. 5 June 2012. Retrieved 12 August 2012.
- "Closing Ceremony" (PDF). International Olympic Committee. 31 January 2002. Archived from the original (PDF) on 26 April 2009. Retrieved 27 August 2008.
- "The Olympic Flags and Emblem". The Vancouver Organizing Committee for the 2010 Olympic and Paralympic Winter Games. Retrieved 10 February 2009.
- "The Latest: Rio Games close with samba-fueled Carnival party". The San Diego Union-Tribune. Associated Press. 21 August 2016. Retrieved 24 June 2018.
- "The Closing Ceremonies of the Olympic Game". International Olympic Committee. 1 June 2014. Retrieved 24 June 2018.
- "Olympic Games – the Medal Ceremonies". Encyclopædia Britannica. Retrieved 29 August 2008. (Registration required (help)).(subscription required)
- "Symbols and Traditions". USA Today. 12 July 1999. Retrieved 29 August 2008.
- "Medal Ceremony Hostess Outfits Revealed". China Daily. 18 July 2008. Retrieved 29 August 2008.
- Madhani, Aamer; Armour, Nancy (13 February 2018). "Medalists at 2018 Winter Olympics get precious keepsake. And a medal". USA Today. Retrieved 22 April 2018.
- "Mascots come first, then medals for Olympic champions". USA Today. Associated Press. 12 February 2018. Retrieved 22 April 2018.
- "Wrestling". The Beijing Organizing Committee for the Games of the XXIX Olympiad. Archived from the original on 26 February 2009. Retrieved 25 March 2009.
- "Sports". International Olympic Committee. Retrieved 8 February 2009.
- "Olympic Sports of the Past". International Olympic Committee. Retrieved 10 February 2009.
- Olympic Charter 2007, pp. 88–90.
- "International Sports Federations". International Olympic Committee. Retrieved 8 February 2009.
- Olympic Charter 2007, p. 87.
- "Factsheet: The sessions" (PDF). International Olympic Committee. p. 1. Archived from the original (PDF) on 29 April 2011. Retrieved 8 February 2009.
- "Recognised Sports". International Olympic Committee. Retrieved 31 March 2009.
- "Factsheet: The sports on the Olympic programme" (PDF). International Olympic Committee. February 2008. Archived from the original (PDF) on 26 April 2009. Retrieved 3 July 2012.
- "Golf, rugby added for 2016 and 2020". ESPN. Associated Press. 9 October 2009. Retrieved 9 October 2009.
- Eassom 1994, pp. 120–123.
- "Jim Thorpe Biography". Biography.com. Retrieved 9 February 2009.
- "Garmisch-Partenkirchen 1936". International Olympic Committee. Retrieved 25 July 2011.
- Schantz, Otto. "The Olympic Ideal and the Winter Games Attitudes Towards the Olympic Winter Games in Olympic Discourses – from Coubertin to Samaranch" (PDF). Comité International Pierre De Coubertin. Archived (PDF) from the original on 19 September 2016. Retrieved 19 September 2016.
- "Amateurism". USA Today. 12 July 1999. Retrieved 9 February 2009.
- Podnieks & Szemberg 2008, Story #17 – Protesting amateur rules, Canada leaves international hockey.
- Podnieks & Szemberg 2008, Story #40 – Finally, Canada to host the World Championship.
- "Summit Series '72 Summary". Hockey Hall of Fame. Archived from the original on 7 August 2008. Retrieved 2 March 2009.
- Podnieks & Szemberg 2008, Story #6 – First Canada Cup opens up the hockey world.
- Krüger & Murray 2003, p. 230
- "Melbourne/Stockholm 1956". International Olympic Committee. Retrieved 25 July 2011.
- "African nations boycott costly Montreal Games". CBC Sports. 30 July 2008. Archived from the original on 15 August 2012. Retrieved 6 February 2009.
- "Africa and the XXIst Olympiad" (PDF). Olympic Review (109–110): 584–585. November–December 1976. Retrieved 6 February 2009.
- MacIntosh, Donald; Greenhorn, Donna; Hawes, Michael (1991). "Trudeau, Taiwan, and the 1976 Montreal Olympics". American Review of Canadian Studies. 21 (4): 423–448. doi: 10.1080/02722019109481098.
- "Game playing in Montreal" (PDF). Olympic Review (107–108): 461–462. October 1976. Retrieved 7 February 2009.
- "ChinaOlympic History". Chinaorbit.com. Archived from the original on 31 May 2008. Retrieved 27 August 2008.
- "Moscow 1980". International Olympic Committee. Retrieved 25 July 2011.
- "Moscow 1980:Cold War, Cold Shoulder". Deutsche Welle. 31 July 2008. Retrieved 27 April 2009.
- "Los Angeles 1984". International Olympic Committee. Retrieved 25 July 2011.
- "Australia: Calls to Boycott Beijing Olympics". Inter Press Service. Archived from the original on 12 September 2008. Retrieved 10 September 2008.
- "Diplomats Visit Tibet as EU Split on Olympic Opening Boycott". The Economic Times. 29 March 2008. Retrieved 7 February 2008.
- "Putin Faces Green Olympic Challenge: The Sochi 2014 Winter Games are threatened by a looming international boycott, environmental concerns, and public protests against local development". Christian Science Monitor. 2008-07-11. Archived from the original on 22 August 2009. Retrieved 18 August 2008. , The Christian Science Monitor. Retrieved 18 August 2008.
- Bernas, Frederick (5 December 2009). "Olympic challenge for Sochi Games". The Guardian. London. Retrieved 31 May 2011.
- Findling & Pelle 2004, p. 107.
- Findling & Pelle 2004, pp. 111–112.
- "Spartakiads". Sovetskaya Entsiklopediya. 24 (part 1). Moscow. 1976. p. 286.
- Roche 2000, p. 106.
- "The USSR and Olympism" (PDF). Olympic Review (84): 530–557. October 1974. Retrieved 4 May 2009.
- "The Role of Sports in The Soviet Union". blogs.bu.edu. Guided History.
- "1968: Black athletes make silent protest". BBC. 17 October 1968. Retrieved 7 February 2009.
- "Iranian Judoka rewarded after snubbing Israeli". NBC Sports. Associated Press. 8 September 2004. Retrieved 7 February 2009.
- "Tom Hicks". Sports-reference.com. Retrieved 30 January 2009.
- "A Brief History of Anti-Doping". World Anti-Doping Agency. Retrieved 10 September 2008.
- Begley, Sharon (7 January 2008). "The Drug Charade". Newsweek. Retrieved 27 August 2008.
- Hunt, Thomas M. (2011). Drug Games: The International Olympic Committee and the Politics of Doping. University of Texas Press. p. 66. ISBN 978-0292739574.
- Ruiz, Rebecca R. (13 August 2016). "The Soviet Doping Plan: Document Reveals Illicit Approach to '84 Olympics". The New York Times. ISSN 0362-4331. Retrieved 3 September 2016.
- Porterfield 2008, p. 15.
- Magnay, Jacquelin (18 April 2003). "Carl Lewis's positive test covered up". The Sydney Morning Herald. Retrieved 28 August 2008.
- Coile, Zachary (27 April 2005). "Bill Seeks to Toughen Drug Testing in Pro Sports". The San Francisco Chronicle. Retrieved 3 September 2008.
- "Doping: 3667 athletes tested, IOC seeks action against Halkia's coach". Express India Newspapers. 19 August 2008. Archived from the original on 1 December 2008. Retrieved 28 August 2008.
- "Play True" (PDF). World Anti-Doping Agency. 2012. Archived from the original (PDF) on 25 January 2013. Retrieved 13 July 2013.
- "Anti-Doping Results Announced". The New York Times. 25 July 2012. Retrieved 13 July 2013.
- "IOC Orders Belarus to Return Gold". ESPN. 13 August 2012. Retrieved 13 July 2013.
- "Bar countries that ban women athletes", Ali Al-Ahmed, The New York Times, 19 May 2008
- "Arab women make breakthrough at Games", CNN, 23 September 2000
- "Afghan women's Olympic dream", BBC, 22 June 2004
- Wallechinsky, David (29 July 2008). "Should Saudi Arabia be Banned from the Olympics?". The Huffington Post.
- "Inside Lines: Protests at 2012 if Saudis say 'no girls allowed'", The Independent, 4 July 2010
- "Saudis to send 2 women to London, make history". Sports Illustrated. Archived from the original on 15 July 2012. Retrieved 13 July 2012.
- "London 2012 Olympics: Saudi Arabian women to compete", BBC, 12 July 2012
- "Female Gulf athletes make their mark in London Olympics". Agence France-Presse. 13 August 2012. Archived from the original on 28 March 2014.
- "Women's boxing gains Olympic spot", BBC, 13 August 2009
- Mather, Victor (21 February 2018). "Desperately Seeking Skiers for a Budding Olympic Sport". The New York Times. Retrieved 24 June 2018.
- "Bush turns attention from politics to Olympics". MSNBC. Associated Press. 7 August 2008. Retrieved 30 January 2009.
- "Olympic Shooters Hug as their Countries do Battle". CNN. 10 August 2008. Retrieved 10 August 2008.
- "Olympic archive". Canadian Broadcasting Corporation. Retrieved 29 August 2008.
- "Spain Tackles Terrorist Threat by Basques to Olympics, Expo". Christian Science Monitor. April 1992.
- "The Threat to the Games in Spain". Washington Post. 1991-08-11.
- "Olympic Park Bombing". CNN. Retrieved 29 August 2008.
- "IOC on bin Laden killing: no bearing on Olympic security". Gazettenet.com. Associated Press. 3 May 2011. Retrieved 25 July 2011.
- Definition: "…the process of transforming an object, idea, activity, or service into a commodity by capitalist economies." Beaster-Jones 2013, par. 1.
- "Olympic Charter" (PDF). Lausanne, Switzerland: International Olympic Committee. July 2011. Retrieved 27 July 2012.
- Shachar 2011, pp. 2114–2116.
- Larmer, Brook (19 August 2008). "The Year of the Mercenary Athlete". Time. Retrieved 27 November 2011.
- Rory Carroll (24 February 2003). "What Zola Budd did next". The Guardian. London. Retrieved 27 November 2011.
- "Lagat a runner without a country". Cool Running. Archived from the original on 19 May 2012. Retrieved 27 November 2011.
- "Medals of Beijing Olympic Games Unveiled". The International Olympic Committee. Archived from the original on 3 September 2008. Retrieved 3 September 2008.
- "St Louis 1904". Olympic Games. Retrieved 3 July 2012.
- "The Modern Olympic Games" (PDF). The Olympic Museum. Archived from the original (PDF) on 6 September 2008. Retrieved 29 August 2008.
- Munro, James (25 August 2008). "Britain may aim for third in 2012". BBC Sport. Retrieved 25 August 2008.
- "Olympic Charter" (PDF). International Olympic Committee. pp. 72–75. Archived from the original (PDF) on 23 July 2011. Retrieved 2 April 2009.
- "Choice of the host city". International Olympic Committee. Retrieved 2 April 2009.
- Charles J.P. Lucas (1905). The Olympic Games – 1904 (PDF) (PDF). St. Louis, MO: Woodard & Tiernan. p. 47. Archived (PDF) from the original on 4 March 2009. Retrieved 28 February 2008.
- "Olympic Medal Winners". International Olympic Committee. Retrieved 2 February 2014.
- MacCarthy, Kevin (30 March 2010). "St Louis – Ireland's Olympic Awakening". Gold, Silver and Green: The Irish Olympic Journey 1896-1924. Cork University Press. pp. 117–146. ISBN 9781859184585.
- The Equestrian Games of the XVI Olympiad Stockholm 1956 (PDF). Stockholm: Esselte Aktiebolag. 1959. p. 23. Retrieved 4 February 2008.
- XVI Olympiad Melbourne 1956 (PDF). Melbourne: W. M. Houston. 1958. p. 37. Retrieved 23 April 2015.
- "Innsbruck 1988 Paralympics – Ceremonies, Medals, Torch Relay". International Paralympic Committee. Retrieved 2 August 2017.
- Beaster-Jones, Jayson (2013). "Commodification". Oxford Music Online. The Grove Dictionary of American Music. Oxford University Press. doi: 10.1093/gmo/9781561592630.article.A2228122.
- Buchanon, Ian; Mallon, Bill (2006). Historical Dictionary of the Olympic Movement. Lanham, MD: Scarecrow Press. ISBN 978-0-8108-5574-8.
- Burkert, Walter (1983). "Pelops at Olympia". Homo Necans. University of California Press. ISBN 978-0-520-05875-0.
- Cooper-Chen, Anne (2005). Global entertainment media. Mahwah, New Jersey: Lawrence Erlbaum Associates. ISBN 978-0-8058-5168-7. Retrieved 21 March 2009.
- Coubertin, Pierre de; Philemon, Timoleon J.; Politis, N.G.; Anninos, Charalambos (1897). The Olympic Games: BC 776 – AD 1896 (PDF). The Olympic Games in 1896 – Second Part. Athens: Charles Beck. Retrieved 2 February 2009.
- Crowther, Nigel B. (2007). "The Ancient Olympic Games". Sport in Ancient Times. Greenwood Publishing Group. ISBN 978-0-275-98739-8.
- Darling, Janina K. (2004). "Panathenaic Stadium, Athens". Architecture of Greece. Santa Barbara, California: Greenwood Publishing Group. ISBN 978-0-313-32152-8. Retrieved 30 January 2009.
- Eassom, Simon (1994). Critical Reflections on Olympic Ideology. Ontario: The Centre for Olympic Studies. ISBN 978-0-7714-1697-2.
- Findling, John E.; Pelle, Kimberly D. (2004). Encyclopedia of the Modern Olympic Movement. Westport CT: Greenwood Press. ISBN 978-0-313-32278-5. Retrieved 30 March 2009.
- Gershon, Richard A. (2000). Telecommunications Management:Industry structures and planning strategies. Mahwah, NJ: Lawrence Erlbaum Associates. ISBN 978-0-8058-3002-6. Retrieved 21 March 2009.
- Girginov, Vassil; Parry, Jim (2005). The Olympic Games Explained: A Student Guide to the Evolution of the Modern Olympic Games. Routledge. ISBN 978-0-415-34604-7. Retrieved 3 July 2012.
- Golden, Mark (2009). "Helpers, Horses, and Heroes". Greek Sport and Social Status. University of Texas Press. ISBN 978-0-292-71869-2.
- International Olympic Committee. "All Games since 1896". Retrieved 20 February 2013.
- Krüger, Arnd; Murray, William J. (2003). The Nazi Olympics: sport, politics and appeasement in the 1930s. University of Illinois Press. ISBN 978-0-252-02815-1. Retrieved 3 July 2012.
- Lee, Jeff (24 November 2007). "Hyper-Hush Surrounds 2010 Games Mascots 'Til Tuesday". The Vancouver Sun. Archived from the original on 4 November 2014. Retrieved 16 March 2014.
- Maraniss, David (2008). Rome 1960. New York: Simon & Schuster. ISBN 978-1-4165-3407-5.
- Matthews, George R. (2005). America's first Olympics: the St. Louis games of 1904. University of Missouri Press. ISBN 978-0-8262-1588-8.
- "Olympic Charter" (PDF). International Olympic Committee. 2007. Archived from the original (PDF) on 23 July 2011. Retrieved 19 September 2012.
- Olympic Museum (2007). "The Olympic Games in Antiquity" (PDF). International Olympic Committee. Archived from the original (PDF) on 26 April 2009. Retrieved 2 February 2009.
- Pausanias (1 January 1926). "Elis 1". Description of Greece. Loeb Classical Library. Vol. 2. translated by W. H. S. Jones and H. A. Ormerud. London: W. Heinemann. ISBN 978-0-674-99207-8. OCLC 10818363. Retrieved 9 January 2009.
- Pindar (1997). "Olympian 10". Olympian Odes. Loeb Classical Library. translated by William H. Race. Harvard University Press. ISBN 978-0-674-99564-2. Retrieved 25 March 2009.
- Porterfield, Jason (2008). Doping:Athletes and Drugs. New York: Rosen Publishing Group. p. 15. ISBN 978-1-4042-1917-5.
- Richardson, N.J. (1992). "Panhellenic Cults and Panhellenic Poets". In Lewis, D.M.; Boardman, John; Davies, J.K. The Fifth Century BC. Cambridge University Press. ISBN 978-0-521-23347-7. Retrieved 2 February 2013.
- Roche, Maurice (2000). Mega-Events and Modernity. New York: Routledge, Taylor & Francis Group. ISBN 978-0-415-15711-7. Retrieved 30 January 2009.
- Schaffer, Kay; Smith, Sidonie (2000). Olympics at the Millennium. New Jersey: Rutgers University Press. ISBN 978-0-8135-2819-9. Retrieved 30 January 2009.
- Schantz, Otto J. (2008). "Pierre de Coubertin's Concepts of Race, Nation, and Civilization". In Susan Brownell. The 1904 Anthropology Days and Olympic Games: Sport, Race, and American Imperialism. Lincoln and London: University of Nebraska Press. ISBN 978-0-8032-1098-1.
- Shachar, Ayelet (2011). "Picking Winners: Olympic Citizenship and the Global Race for Talent". Yale Law Journal. 120 (8): 2088–2139.
- Slack, Trevor (2004). The Commercialisation of sport. New York: Routledge. ISBN 978-0-7146-8078-1. Retrieved 31 March 2009.
- Spivey, Nigel Jonathan (2004). "Olympia: the Origins". The Fifth Century BC. Oxford University Press. ISBN 978-0-19-280433-4.
- Swaddling, Judith (1999). The Ancient Olympic Games. University of Texas Press. ISBN 978-0-292-77751-4.
- Swaddling, Judith (2000). The Ancient Olympic Games (2 ed.). Austin: University of Texas Press. ISBN 978-0-292-70373-5. OCLC 10759486. Retrieved 6 June 2009.
- Tomlinson, Alan (2005). Sport and leisure cultures. Minneapolis MN: University of Minnesota Press. ISBN 978-0-8166-3382-1. Retrieved 2 April 2009.
- Vancouver Organizing Committee for the 2010 Olympic and Paralympic Winter Games (27 November 2007). "Vancouver 2010 Mascots Introduced to the World". Canadian NewsWire. Retrieved 10 March 2014.
- Weiler, Ingomar (2004). "The predecessors of the Olympic movement, and Pierre de Coubertin". European Review. 12 (3).
- Woods, Ron (2007). Social Issues in Sport. Champaign IL: Human Kinetics. ISBN 978-0-7360-5872-8. Retrieved 2 April 2009.
- Young, David C. (2004). "The Beginnings". A Brief History of the Olympic Games. Wiley-Blackwell. ISBN 978-1-4051-1130-0.
- Young, David C. (1996). The Modern Olympics: A Struggle for Revival. Baltimore: Johns Hopkins University Press. ISBN 978-0-8018-7207-5.
- Boykoff, Jules (2016). Power Games: A Political History of the Olympics. New York and London: Verso. ISBN 978-1-784-78072-2.
- Buchanan, Ian (2001). Historical dictionary of the Olympic movement. Lanham: Scarecrow Presz. ISBN 978-0-8108-4054-6.
- Kamper, Erich; Mallon, Bill (1992). The Golden Book of the Olympic Games. Milan: Vallardi & Associati. ISBN 978-88-85202-35-1.
- Preuss, Holger; Marcia Semitiel García (2005). The Economics of Staging the Olympics: A Comparison of the Games 1972–2008. Edward Elgar Publishing. ISBN 978-1-84376-893-7.
- Simson, Vyv; Jennings, Andrew (1992). Dishonored Games: Corruption, Money, and Greed at the Olympics. New York: S.P.I. Books. ISBN 978-1-56171-199-4.
- Wallechinsky, David (2004). The Complete Book of the Summer Olympics, Athens 2004 Edition. SportClassic Books. ISBN 978-1-894963-32-9.
- Wallechinsky, David (2005). The Complete Book of the Winter Olympics, Turin 2006 Edition. SportClassic Books. ISBN 978-1-894963-45-9.
- Official website
- "Olympic Games". Encyclopædia Britannica Online.
- Olympic Games at Curlie
- New York Times Interactive of all the medals in the Modern Olympics
- insidethegames – the latest and most up to date news and interviews from the world of Olympic, Commonwealth and Paralympic Games
- ATR – Around the Rings – the Business Surrounding the Olympics
- GamesBids.com – An Authoritative Review of Olympic Bid Business (home of the BidIndex™)
- Database Olympics
- History of Olympics to the Present Day
- Reference book about all Olympic Medalists of all times
- Days left until the next Olympic Games | The Olympic Games Countdown | 2012 | Sochi 2014 | Rio 2016 | PyeongChang 2018 | Tokyo 2020
- Olympic and Asian games records