dana lewis has more from london. >> it is a shock not only to me as a correspondent who has covered boris and interviewed him many times, starting as far back in the 1990s, when he was the deputy prime minister under boris yeltsin until the time he ran for a mayor in sochi, to expose corruption in the olympics, and trying to start a real opposition movement from sochi, that would have free media and free speech in russia to criticize the kremlin vladimir putin, which he has done for the last two decades. he is i think, the tallest, highest profile political opposition figure in russia. the timing is extremely sinister. he was about to be working on a report. it is said that directly it points the finger at vladimir putin, for pulling the trigger on the events in ukraine, causing the events in ukraine, and putting troops into ukraine, despite vladimir putin's denials, and told a magazine this month, earlier this month, boris told a russian naga zone that he feared for his life because of outspoken criticisms of vladimir putin. here he is walking meters away from the kremlin, on a bridge in