In June 1992, Presidents George H. W. Bush and Boris Yeltsin agreed to a follow-up agreement with START I. Start II, signed in January 1993, called for the reduction of strategic arsenals to 3,000-3,500 warheads and banned the use of destabilizing land-based missiles with several warheads. START II would have counted warheads in much the same way as START I and would have demanded, like its predecessor, the destruction of delivery vehicles, but no warheads. The initial deadline for the implementation of the agreement was January 2003, ten years after it was signed, but a 1997 protocol extended that deadline to December 2007 due to an abrupt delay in ratification. Both the Senate and the Duma approved START II, but the treaty did not enter into force because the Senate did not ratify the 1997 protocol and several amendments to the abM treaty, which the Duma justified as a condition for START II`s entry into force. In 2002, Start II was virtually frozen by the withdrawal of the United States from the ABM Treaty. START III Framework An agreement to limit strategic launchers was reached on 18 June 1979 in Vienna and signed by Leonid Brezhnev and Carter at a ceremony in the Redouten Hall of the Imperial Hofburg.  In June 1979, Carter and Brezhnev met in Vienna and signed the SALT II agreement.
The treaty effectively established numerical equality between the two nations with respect to the delivery of nuclear weapons. It also limited the number of MIRV missiles (missiles with several independent nuclear warheads). In reality, the treaty has done little or nothing to stop or even significantly slow down the arms race. Yet it has been the subject of relentless criticism in the United States. The treaty was denounced as a “sell-off” to the Soviets, which would leave America virtually defenseless against a whole series of new weapons that are not mentioned in the agreement. Even the proponents of arms control were not enthusiastic about the treaty, because it did not contribute to the actual control of arms. The Strategic Arms Limitation Talks (SALT) began in November 1969 and limited both the Ballistic Missile Treaty (ABM), which limited strategic missile defence to 200 interceptors each (100 years later), and the interim agreement, an executive agreement, US and Soviet intercontinental missiles (ICBM) and U-boat missiles (SLBM). As part of the interim agreement, both parties committed not to build new ICBM silos, not to “significantly” increase the size of existing ICBMs, and to limit the number of SLBM starter tubes and SLBM-carrying submarines.
The agreement ignored strategic bombers and did not address warhead numbers, so both sides were free to increase their armed forces by placing several warheads (MIRVs) on their ICBMs and SLBMs and strengthening their bomber forces. The agreement limited the United States to 1,054 ICBM silos and 656 SLBM starter tubes. The Soviet Union was limited to 1,607 ICBM silos and 740 SLBM starter tubes. In June 2002, the United States unilaterally withdrew from the ABM Treaty. SALT II The Strategic Arms Limitation Talks (SALT) were two bilateral conferences and corresponding international treaties, in which the United States and the Soviet Union, superpowers of the Cold War, participated in the issue of arms control.