Switzerland

1925 Geneva Protocol
Signature (Paris) 17 June 1925  
Deposit of instruments of ratification (Paris) 12 July 1932  
Antarctic Treaty
Deposit of instruments of accession (Washington) 15 November 1990  
Anti-Personnel Mine Ban Convention
Signature (UN) 3 December 1997  
Deposit of instruments of ratification (UN) 24 March 1998 *
Arms Trade Treaty
Signature (UN) 3 June 2013  
Deposit of instruments of ratification (UN) 30 January 2015 *
Biological Weapons Convention
Signature (Moscow) 10 April 1972  
Signature (Washington) 10 April 1972 *
Signature (London) 10 April 1972 *
Deposit of instruments of ratification (London) 4 May 1976  
Deposit of instruments of ratification (Moscow) 4 May 1976 *
Deposit of instruments of ratification (Washington) 4 May 1976 *
Chemical Weapons Convention
Signature (UN) 14 January 1993  
Deposit of instruments of ratification (UN) 10 March 1995  
Comprehensive Nuclear-Test-Ban Treaty
Signature (UN) 24 September 1996  
Deposit of instruments of ratification (UN) 1 October 1999  
Convention on Certain Conventional Weapons
Signature (UN) 18 June 1981  
Deposit of instruments of ratification (UN) 20 August 1982 *
Deposit of instruments of acceptance to Amendment to the Convention on Certain Conventional Weapons (UN) 19 January 2004  
Consent to be bound to Protocol III to the Convention on Certain Conventional Weapons (UN) 20 August 1982  
Consent to be bound to Amended Protocol II on the Use of Mines, Booby-Traps and Other Devices (UN) 24 March 1998 *
Consent to be bound to Protocol II to the Convention on Certain Conventional Weapons (UN) 20 August 1982  
Consent to be bound to Protocol IV on Blinding Laser Weapons (UN) 24 March 1998 *
Consent to be bound to Protocol I to the Convention on Certain Conventional Weapons (UN) 20 August 1982  
Consent to be bound to Protocol V on Explosive Remnants of War (UN) 12 May 2006  
Convention on Cluster Munitions
Signature (UN) 3 December 2008  
Deposit of instruments of ratification (UN) 17 July 2012 *
Convention on Environmental Modification Techniques (ENMOD)
Deposit of instruments of accession (UN) 5 August 1988 *
International Convention for the Suppression of Acts of Nuclear Terrorism
Signature (UN) 14 September 2005  
Deposit of instruments of ratification (UN) 15 October 2008  
Outer Space Treaty
Signature (London) 27 January 1967  
Signature (Moscow) 30 January 1967  
Signature (Washington) 27 January 1967  
Deposit of instruments of ratification (London) 18 December 1969  
Deposit of instruments of ratification (Moscow) 18 December 1969  
Deposit of instruments of ratification (Washington) 18 December 1969  
Partial Test Ban Treaty
Signature (Washington) 26 August 1963  
Signature (London) 26 August 1963  
Signature (Moscow) 26 August 1963  
Deposit of instruments of ratification (Washington) 16 January 1964  
Deposit of instruments of ratification (London) 16 January 1964  
Deposit of instruments of ratification (Moscow) 16 January 1964  
Sea-Bed Treaty
Signature (Washington) 11 February 1971  
Signature (Moscow) 11 February 1971  
Signature (London) 11 February 1971  
Deposit of instruments of ratification (Washington) 4 May 1976  
Deposit of instruments of ratification (Moscow) 4 May 1976  
Deposit of instruments of ratification (London) 4 May 1976  
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)
Signature (Moscow) 27 November 1969  
Signature (Washington) 27 November 1969  
Signature (London) 27 November 1969 *
Deposit of instruments of ratification (Moscow) 9 March 1977  
Deposit of instruments of ratification (London) 9 March 1977 *
Deposit of instruments of ratification (Washington) 9 March 1977 *