Holy See

1925 Geneva Protocol
Deposit of instruments of accession (Paris) 18 October 1966  
Anti-Personnel Mine Ban Convention
Signature (UN) 4 December 1997  
Deposit of instruments of ratification (UN) 17 February 1998  
Biological Weapons Convention
Deposit of instruments of accession (Washington) 7 January 2002 *
Chemical Weapons Convention
Signature (UN) 14 January 1993  
Deposit of instruments of ratification (UN) 12 May 1999 *
Comprehensive Nuclear-Test-Ban Treaty
Signature (UN) 24 September 1996 *
Deposit of instruments of ratification (UN) 18 July 2001 *
Convention on Certain Conventional Weapons
Deposit of instruments of accession (UN) 22 July 1997 *
Deposit of instruments of acceptance to Amendment to the Convention on Certain Conventional Weapons (UN) 9 December 2002 *
Consent to be bound to Amended Protocol II on the Use of Mines, Booby-Traps and Other Devices (UN) 22 July 1997  
Consent to be bound to Protocol I to the Convention on Certain Conventional Weapons (UN) 22 July 1997  
Consent to be bound to Protocol V on Explosive Remnants of War (UN) 13 December 2005 *
Consent to be bound to Protocol IV on Blinding Laser Weapons (UN) 22 July 1997  
Consent to be bound to Protocol II to the Convention on Certain Conventional Weapons (UN) 22 July 1997  
Consent to be bound to Protocol III to the Convention on Certain Conventional Weapons (UN) 22 July 1997  
Convention on Cluster Munitions
Signature (UN) 3 December 2008  
Deposit of instruments of ratification (UN) 3 December 2008 *
Convention on Environmental Modification Techniques (ENMOD)
Signature (UN) 27 May 1977  
Outer Space Treaty
Signature (London) 5 April 1967  
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)
Deposit of instruments of accession (London) 25 February 1971 *
Deposit of instruments of accession (Washington) 25 February 1971 *
Deposit of instruments of accession (Moscow) 25 February 1971 *