LONDON — A new report into systematic Russian doping details a wide-ranging “institutional conspiracy” that involved more than 1,000 athletes across more than 30 sports, including evidence corroborating large-scale sample swapping at the 2014 Sochi Winter Olympics. World Anti-Doping Agency investigator Richard McLaren said Friday the conspiracy involved the Russian Sports Ministry, national anti-doping agency and the FSB intelligence service, providing further details of state involvement in a massive program of cheating and cover-ups that he said operated on an “unprecedented scale” from 2011 to 2015. “It is impossible to know just how deep and how far back this conspiracy goes,” McLaren said at a news conference in London. “For years, international sports competitions have unknowingly been hijacked by Russians. Coaches and