President George Bush and his Soviet counterpart Mikhail Gorbachev during a press conference at a summit in Moscow on July 31, 1991. By the end of the year, the Soviet Union had collapsed and Gorbachev was forced from power.

President George Bush and his Soviet counterpart Mikhail Gorbachev during a press conference at a summit in Moscow on July 31, 1991. By the end of the year, the Soviet Union had collapsed and Gorbachev was forced from power.