Whistleblowers describe Russia's sports doping system
Yuliya Stepanova: The athlete who blew the whistle on Russian doping - BBC Newsnight
'Icarus': How an amateur cyclist fell into secret world of Russian doping | ABC News
Where is the ‘Russia Doping Scandal’ going?
Russia's Olympics Doping Scandal, Explained
Doping in Russian sports has a systemic nature. Russia has had 51 Olympic medals stripped for doping violations – the most of any country, four times the number of the runner-up, and more than a quarter of the global total. From 2011 to 2015, more than a thousand Russian competitors in various sports, including summer, winter, and Paralympic sports, benefited from a cover-up.