**FILE** Russian President Boris Yeltsin and his wife Naina walk during festivities marking the Day of Russia on Red Square in Moscow, in this June 12, 2003 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/Misha Japaridze, file)