SALT I

The Strategic Arms Limitation Treaty (SALT i) imposed limits on the nuclear capability of Russia and the USA in 1972.

• The USA and USSR agreed that there would be no further production of strategic ballistic missiles.
• Both powers agreed that submarines carrying nuclear weapons would only be introduced when existing stocks of ICBM's became obsolete. 

SALT I was signed by the American president and the Soviet premier in 1972. It was significant as it was the first agreement that successfully limited the number of nuclear weapons. It also showed that detente created an environment where the two could cooperate on issues.