United States of America

1925 Geneva Protocol
Signature (Paris) 17 June 1925  
Deposit of instruments of ratification (Paris) 10 April 1975 *
Antarctic Treaty
Signature (Washington) 1 December 1959  
Deposit of instruments of ratification (Washington) 18 August 1960  
Arms Trade Treaty
Signature (UN) 25 September 2013  
Biological Weapons Convention
Signature (Washington) 10 April 1972  
Signature (Moscow) 10 April 1972  
Signature (London) 10 April 1972  
Deposit of instruments of ratification (Moscow) 26 March 1975  
Deposit of instruments of ratification (London) 26 March 1975  
Deposit of instruments of ratification (Washington) 26 March 1975  
Chemical Weapons Convention
Signature (UN) 13 January 1993  
Deposit of instruments of ratification (UN) 25 April 1997 *
Comprehensive Nuclear-Test-Ban Treaty
Signature (UN) 24 September 1996  
Convention on Certain Conventional Weapons
Signature (UN) 8 April 1982 *
Deposit of instruments of ratification of Amendment to the Convention on Certain Conventional Weapons (UN) 21 January 2009  
Deposit of instruments of ratification (UN) 24 March 1995 *
Consent to be bound to Protocol V on Explosive Remnants of War (UN) 21 January 2009 *
Consent to be bound to Protocol IV on Blinding Laser Weapons (UN) 21 January 2009 *
Consent to be bound to Protocol II to the Convention on Certain Conventional Weapons (UN) 24 March 1995  
Consent to be bound to Protocol I to the Convention on Certain Conventional Weapons (UN) 24 March 1995  
Consent to be bound to Protocol III to the Convention on Certain Conventional Weapons (UN) 21 January 2009  
Consent to be bound to Amended Protocol II on the Use of Mines, Booby-Traps and Other Devices (UN) 24 May 1999 *
Convention on Environmental Modification Techniques (ENMOD)
Signature (UN) 18 May 1977  
Deposit of instruments of ratification (UN) 17 January 1980  
Inter-American Convention on Firearms
Signature (OAS) 14 November 1997  
Inter-American Convention on Transparency
Signature (OAS) 7 June 1999  
International Convention for the Suppression of Acts of Nuclear Terrorism
Signature (UN) 14 September 2005  
Deposit of instruments of ratification (UN) 30 September 2015 *
Outer Space Treaty
Signature (London) 27 January 1967  
Signature (Washington) 27 January 1967  
Signature (Moscow) 27 January 1967  
Deposit of instruments of ratification (London) 10 October 1967  
Deposit of instruments of ratification (Moscow) 10 October 1967  
Deposit of instruments of ratification (Washington) 10 October 1967  
Partial Test Ban Treaty
Signature (Washington) 5 August 1963  
Signature (London) 5 August 1963  
Signature (Moscow) 5 August 1963  
Deposit of instruments of ratification (Moscow) 10 October 1963  
Deposit of instruments of ratification (London) 10 October 1963  
Deposit of instruments of ratification (Washington) 10 October 1963  
Pelindaba Treaty
Signature to Protocol II to the Pelindaba Treaty (African Union) 11 April 1996  
Signature to Protocol I to the Pelindaba Treaty (African Union) 11 April 1996  
Sea-Bed Treaty
Signature (Moscow) 11 February 1971  
Signature (London) 11 February 1971  
Signature (Washington) 11 February 1971  
Deposit of instruments of ratification (London) 18 May 1972  
Deposit of instruments of ratification (Washington) 18 May 1972  
Deposit of instruments of ratification (Moscow) 18 May 1972 *
Treaty of Rarotonga
Signature to Protocol 2 to the Treaty of Rarotonga (PIFS) 25 March 1996  
Signature to Protocol 1 to the Treaty of Rarotonga (PIFS) 25 March 1996  
Signature to Protocol 3 to the Treaty of Rarotonga (PIFS) 25 March 1996  
Treaty of Tlatelolco
Signature to Additional Protocol I to the Treaty of Tlatelolco (Mexico City) 26 May 1977  
Signature to Additional Protocol II to the Treaty of Tlatelolco (Mexico City) 1 April 1968 *
Deposit of instruments of ratification of Additional Protocol II to the Treaty of Tlatelolco (Mexico City) 12 May 1971 *
Deposit of instruments of ratification of Additional Protocol I to the Treaty of Tlatelolco (Mexico City) 23 November 1981 *
Treaty on Conventional Armed Forces in Europe (CFE)
Signature (The Hague) 19 November 1990  
Signature to Agreement on Adaptation of the Treaty on Conventional Armed Forces in Europe (The Hague) 19 November 1999  
Deposit of instruments of ratification (The Hague) 29 January 1992 *
Treaty on Open Skies
Signature (Budapest) 24 March 1992  
Signature (Ottawa) 24 March 1992  
Deposit of instruments of ratification (Ottawa) 3 December 1993 *
Deposit of instruments of ratification (Budapest) 3 December 1993 *
Treaty on a Nuclear-Weapon-Free Zone in Central Asia (CANWFZ)
Signature to Protocol to the Treaty on a Nuclear-Weapon-Free Zone in Central Asia (CANWFZ) (Bishkek) 6 May 2014  
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)
Signature (Moscow) 1 July 1968  
Signature (Washington) 1 July 1968  
Signature (London) 1 July 1968  
Deposit of instruments of ratification (Washington) 5 March 1970  
Deposit of instruments of ratification (London) 5 March 1970  
Deposit of instruments of ratification (Moscow) 5 March 1970