Boris Nemtsov, 55, was First Deputy Prime Minister under President Boris Yeltsin. In a calculated drive-by hit a gunman in a white car shot Mr. Nemtsov four times in the back as he was walking across a bridge in view of the Kremlin. He had just finished trying to rally support for a march against Russia's war on Ukraine to be held on Sunday. Nemtsov had said in a recent interview that he feared Russian president Vladimir Putin would have him assassinated. The Kremlin has issued a statement on Putin's behalf condemning the murder.