WADA knew about Russian doping for years - whistleblower

The World Anti-Doping Agency (WADA) was aware of systematic doping in Russia for years but did nothing until a documentary jolted the agency into action, a former Russian Anti-Doping Agency official told CBC. Vitaly Stepanov and wife Yuliya, an international runner who was banned for doping, were the whistleblowers who provided key evidence for a German television documentary that led to the establishment of a WADA independent commission.