**FILE** Russian President Boris Yeltsin is shown as he listens to an adviser, while Russian Prime Minister Viktor Chernomyrdin stands in the background, Almaty, Kazakhstan, in this Feb. 10, 1995 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/Efrem Lukatsky, File)