A Russian opposition politician who was among the harshest critics of Vladimir Putin was shadowed by a government agent for almost a year before he was shot dead, a new investigation has claimed.
Boris Nemtsov was followed by a team of agents of the Federal Security Service (FSB), Russia’s federal security agency, on at least 13 journeys before he was assassinated, according to a joint investigation conducted by the BBC, Bellingcat and The Insider published on Monday, a little more than seven years after the killing.
