**CORRECTS SPELLING OF YELTSIN IN FIRST REFERENCE **FILE** Boris Yeltsin announces in a three-minute speech to the Communist Party Congress that he is quitting the communist party at the Kremlin, in this July 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 Yurchencko, File)