Olympic Games 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
Doping at the Olympic Games lifetime ban for doping during the London Olympics, along with 800m bronze medalist Ekaterina Poistogova. On 10 February 2017, the Court of Arbitration for Sport upheld a four-year ban that effectively stripped Savinova of her Olympic gold and other medals. On 7 April 2017, CAS refused to decide on disqualification from 2012, and disqualify Ekaterina Poistogova from 2015. Thus, Ekaterina Poistogova retained her Olympic 2012 medal at women's 800 metres athletic event. In April 2017, the Olympics has had 29 Olympic medals stripped for doping violations. Russia is the leading country with 13 medals stripped. Athletes who were selected for