The Strategic Arms Limitation Talks (SALT I) was entered into force from 1969 to 1972. The United States and the Soviet Union negotiated agreements on limits and restraints of their strategic armaments. The first talks were unsuccessful and the arms race continued. The Soviet Union began construction of its anti-ballistic missile (ABM) system and the United States began developing their own. In the first session talks, both the United States and the Soviet Union gained a better understanding of the other’s perspectives. Attempts to reach an agreement failed on the ABM systems and more proposals were made. After over two years of negotiation, SALT I ended, but an Interim Agreement for five years was established for certain major aspects of strategic weaponry.
Opened for Signature: 26 May 1972
Entry into force: 3 October 1972
Status and Signatories: http://www.state.gov/t/isn/5191.htm
ACA Backgrounder: https://www.armscontrol.org/factsheets/USRussiaNuclearAgreements