* Astronomy

SALT II was a controversial experiment of negotiations between Jimmy Carter and Leonid Brezhnev from 1977 to 1979 between the U.S. and the Soviet Union, which sought to curtail the manufacture of strategic nuclear weapons. It was a continuation of the progress made during the SALT I talks, led by representatives from both countries. SALT II was the first nuclear arms treaty which assumed real reductions in strategic forces to 2,250 of all categories of delivery vehicles on both sides. SALT II helped the U.S. to discourage the Soviets from arming their third generation ICBMs of SS-17, SS-19 and SS-18 types with many more Multiple independently targetable reentry vehicles (MIRVs).
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Jimmy Carter and Leonid Brezhnev signing SALT II treaty, June 18, 1979, in Vienna