The Russian President is vowing to find and punish the killers of prominent opposition figure Boris Nemtsov.<br /><br /> The former deputy prime minister was shot dead as he was walking close to the Kremlin by a gunman in a passing vehicle.<br /><br /> Nemtsov was a major critic of Vladimir Putin and was due to lead a rally against the war in Ukraine on Sunday.<br /><br /> A spokesman for the Russian Investigative Committee, Vladimir Markin, said: “We have several lines of inquiry. First of all, of course, is the possibility that the murder could be a provocation to destabilise the political situation in Russia. <br /><br /> “And Nemtsov could have been a sacrificial victim for those who won’t stop at anything to reach their political goals.” <br /><br /> Nemtsov had been openly condemning the war in Ukraine as Russian aggression and bad for his country. <br /><br /> He also slammed President Putin over his claims that Russia does not have troops in Ukraine.<br /><br /> Writer and analyst Vladimir Voynovich told euronews: <br /><br /> “We can say the current regim
