 Complete the following phrase:  In July 1991, Bush and Gorbachev signed the Strategic Arms Reduction Treaty START I treaty, the first major arms agreement since the 1987 Intermediate Ranged Nuclear Forces Treaty. Both countries agreed to cut their strategic nuclear weapons by 30 percent, and the Soviet Union promised to reduce its intercontinental ballistic missile force by 50 percent. In August 1991, hard-line Communists launched a coup against Gorbachev; while the coup quickly fell apart, it broke the remaining power of Gorbachev and the central Soviet government. Later that month, Gorbachev resigned as general secretary of the Communist party, and Russian president Boris Yeltsin ordered the seizure of Soviet property. Gorbachev clung to power as the President of the Soviet Union until December 1991, when the Soviet Union 