July 31, 1991 (June 20), Xinwei, Suda Cheng Strategic Arms Reduction Treaty.

US-Soviet negotiations on the reduction of strategic weapons began in 1982, after 15, has finally come to an end in the context of the end of the Cold War. July 31, 1991, U.S. President George W. Bush and Soviet President Mikhail Gorbachev meeting in Moscow an agreement formally signed the treaty, known as "the reduction of strategic offensive weapons treaty. Strategic delivery vehicles (intercontinental ballistic missiles, submarine-launched ballistic missiles, strategic bombers) (�Ө�d��y����h�� $ �Ө�ry.c��m) treaty provides that each party has the total number does not exceed one thousand one hundred, including heavy-duty ballistic missiles, not more than 154; Each side may retain 6,000 strategic nuclear warheads, intercontinental and submarine-launched ballistic missile nuclear warheads does not exceed four thousand nine hundred and not more than one thousand one hundred strategic bombers airborne nuclear warheads. The treaty provides for more stringent verification measures, and stipulates that both sides in the seven years after the entry into force of the Treaty in three stages to complete the disarmament task. The conclusion of this treaty, the United States and the Soviet Union's long-term bargaining, especially the Soviet Union made a compromise and concessions, it is the United States and the Soviet Union achieved a breakthrough in the field of nuclear disarmament, to reduce the level of nuclear confrontation between the two countries to reduce the threat of nuclear war has a role in promoting. Nuclear weapons after the United States and the Soviet Union cut is sufficient to several mutual destruction, they still have a long way to go in nuclear disarmament.