Agreement
|
Date signed
|
Date of entry into force
|
Number of states parties
|
Objective
|
McCloy–Zorin Accords
|
|
20 December 1961
|
|
Establish a foundation for all future international (nuclear) disarmament negotiations
|
Partial Nuclear Test Ban Treaty[15]
|
5 August 1963
|
10 October 1963
|
126 (list)
|
Ban all nuclear weapons tests except for those conducted underground
|
Anti-Ballistic Missile Treaty
|
26 May 1972
|
1972
(US withdrawal: 2002)
|
US and USSR
|
Limit anti-ballistic missile (ABM) systems used in defending areas against ballistic missile-delivered nuclear weapons
|
Threshold Test Ban Treaty
|
3 July 1974
|
11 December 1990
|
US and USSR
|
Ban nuclear tests of devices having a yield exceeding 150 kilotons
|
Comprehensive Nuclear-Test-Ban Treaty (CTBT)[16]
|
10 September 1996
|
Not in force
|
176 (list)
|
Ban all nuclear weapons tests
|
Fissile Material Cut-off Treaty
|
NA
|
NA
|
NA
|
Prohibit the further production of fissile material
|
Intermediate-Range Nuclear Forces Treaty
|
8 December 1987
|
1 June 1988
(expiration: 2 August 2019)
|
US and USSR
|
Ban land-based ballistic missiles, cruise missiles, and missile launchers with ranges between 500 and 5,500 km
|
SALT I (Strategic Arms Limitation Talks)
|
26 May 1972
|
|
US and USSR
|
Limit the number of strategic ballistic missile launchers
|
SALT II
|
June 18 1979
|
Never entered into force
|
US and USSR
|
Limit the number of strategic ballistic missile launchers
|
START I (Strategic Arms Reduction Treaty)
|
31 July 1991
|
5 December 1994
|
US and USSR
|
Limit the number of deployed nuclear warheads to 6,000 and of intercontinental ballistic missiles (ICBMs) to 1,600
|
START II
|
3 January 1993
|
14 April 2000
(USSR withdrawal: 14 June 2002)
|
US and Russia
|
Ban the use of multiple independently targetable re-entry vehicles (MIRVs) on ICBMs
|
START III
|
not completed
|
NA
|
US and Russia
|
Limit the number of deployed strategic nuclear warheads
|
Strategic Offensive Reductions Treaty (SORT)
|
24 May 2002
|
1 June 2003
(expiration: 5 February 2011)
|
US and Russia
|
Limit the number of deployed strategic nuclear warheads to between 1,700 and 2,200
|
New START
|
8 April 2010
|
5 February 2011
|
US and Russia
|
Limit the number of deployed strategic nuclear warheads to 1,550, deployed missiles and bombers to 700, and deployed and non-deployed launchers (missile tubes and bombers) to 800
|