**FILE** Russian Leader Boris Yeltsin is shown as he speaks with an unidentified colleague during a break at the Soviet congress in Moscow in this March 12, 1990 file photo. Former President Boris Yeltsin, who engineered the final collapse of the Soviet Union and pushed Russia to embrace democracy and a market economy, has died, a Kremlin official said Monday, April 23, 2007. He was 76. (AP Photo/Boris Yurchenko, File)