epa04641157 A file picture dated 04 July 2000 shows Russian President Vladimir Putin (R) shaking hands with then Leader of the State Duma’s Right-Wing Union faction Boris Nemtsov (L) during a meeting at Moscow’s Kremlin, Russia. Russian opposition leader Boris Nemtsov was shot dead from a passing car on the Bolshoy Kammeny bridge in central Moscow late in the evening of 27 February 2015. Nemtsov, who served as a deputy prime minister under Boris Yeltsin, had been a constant critic of President Vladimir Putin since he came to power in 2000. Since 2013, Nemtsov was a member of the parliament representing the Yaroslavl region north of Moscow. EPA/ITAR-TASS / POOL