Answer:
If we discuss here formal treaties between the United States and the Soviet Union, we could point at relevant arms control agreements. Here is one example: In 1972, the USA and the USSR signed the SALT I and in 1978, they signed the SALT II.
In 1978, president Jimmy Carter and secretary-general Leonid Brezhnev signed the second Strategic Arms Limitation Talks (SALT II) treaty after six years of negotiations on behalf of the United States and the Soviet Union, respectively. SALT I and SALT II had the goals to reduce the production of missiles capable of carrying nuclear warheads, they were aimed at reducing the manufacture of strategic ballistic missiles (long-range or intercontinental).
Step-by-step explanation: