In August 1972, the U.S. Senate approved the agreements by an overwhelming majority. Salt-I, as we have learned, served as the basis for all the discussions on weapons limitation that followed. Even after the Vladivostok agreements, the two nations were unable to resolve the other two outstanding issues of SALT I: the number of strategic bombers and the total number of warheads in each nation`s arsenal. The first was made more difficult by the Soviet Bomber Backfire, which American negotiators thought could reach the United States, but which the Soviets did not want to include in the SALT negotiations. Meanwhile, the Soviets tried unsuccessfully to limit the American use of cruise air missiles (ALCMs). The audit also divided the two nations, but they eventually agreed on the use of National Technical Means (NTM), including the collection of electronic signals known as telemetry and the use of photo recognition satellites. On June 17, 1979, Carter and Brezhnev signed the SALT II Treaty in Vienna. Salt II limited the total number of nuclear forces from both countries to 2,250 delivery vehicles and imposed numerous additional restrictions on core strategic forces, including MIRVs. Strategic Arms Limitation Talks (SALT), negotiations between the United States and the Soviet Union to limit the manufacture of strategic missiles capable of carrying nuclear weapons. The first agreements, known as SALT I and SALT II, were signed in 1972 and 1979 by the United States and the Union of Soviet Socialist Republics and aimed to limit the arms race of strategic (long-range or intercontinental) nuclear-armed ballistic missiles. For the first time proposed by U.S.
President Lyndon B. Johnson in 1967, strategic arms limitation talks were agreed by the two superpowers in the summer of 1968, and in November 1969 comprehensive negotiations began. The link between strategic arms restrictions and outstanding issues such as the Middle East, Berlin and especially Vietnam has become the central focus of Nixon and Kissinger`s détente policy. By making connections, they hoped to change the nature and direction of American foreign policy, including the U.S. policy of nuclear disarmament and arms control, and separate it from those practiced by Nixon`s predecessors. They also intended to make U.S. gun control policy part of the pull-up by The Link. […] Its link policy had indeed failed. It failed mainly because it was based on erroneous assumptions and erroneous premises, which the Soviet Union wanted above all a strategic arms control agreement, far more than the United States.  The most important element of the summit was the salt agreements. Discussions on SALT have been going on for about two and a half years, but with little progress.
However, during the meeting between Nixon and Brezhnev in May 1972, a monumental breakthrough was made. The SALT de accords signed on 27 May dealt with two important issues. First, they limited the number of anti-ballistic missile (ABM) sites to two. (ABMs were missiles designed to destroy arriving missiles.) Second, the number of intercontinental missiles and submarine-launched ballistic missiles has been frozen at current levels. However, the agreements have done nothing on several independent return missiles (individual missiles with several nuclear warheads) or on the development of new weapons. Yet most Americans and Soviets hailed the salts agreements as huge achievements.