. >> reporter: according t to rochencough, people posing as workers swapped out dirty urine of russianr clean samples. once safely in the u.s., he decided to go public and foegel was deeply intertwined. international outrage ensued. russia's participation in the 2016 games put into jeopardy. ultimately, only the russian track and field team would be putin has continued to deny the allegation. >> i doubt that he ordered the actual doping to happen. but that he made clear that he wanted the athletes to win at any cost. >> reporter: u.s. intelligent agencies say the exposure of the doping scandal was one of russia's motivations for interfering in the 2016 presidential election. given your perspective on russia now, having been through what you've been through, what would you say to those who doubt all this? >> watch this film, and then tell me or tell the world that you doubt what russia is capable of. it's that clear and simple. >> reporter: dan harris, abc news, new york. >> so he said it was quite a surprise for him three stumbled upon this. >> that is a lot to stumble upon. >> and you