Lesotho

1925 Geneva Protocol
Deposit of instruments of succession (Paris) 15 March 1973  
Anti-Personnel Mine Ban Convention
Signature (UN) 4 December 1997  
Deposit of instruments of ratification (UN) 2 December 1998  
Arms Trade Treaty
Signature (UN) 25 September 2013  
Deposit of instruments of ratification (UN) 25 January 2016  
Biological Weapons Convention
Signature (Washington) 10 April 1972  
Deposit of instruments of ratification (London) 6 September 1977  
Chemical Weapons Convention
Signature (UN) 7 December 1994  
Deposit of instruments of ratification (UN) 7 December 1994  
Comprehensive Nuclear-Test-Ban Treaty
Signature (UN) 30 September 1996  
Deposit of instruments of ratification (UN) 14 September 1999  
Convention on Certain Conventional Weapons
Deposit of instruments of accession (UN) 6 September 2000  
Deposit of instruments of accession to Amendment to the Convention on Certain Conventional Weapons (UN) 25 April 2016  
Consent to be bound to Protocol V on Explosive Remnants of War (UN) 25 April 2016  
Consent to be bound to Protocol III to the Convention on Certain Conventional Weapons (UN) 6 September 2000  
Consent to be bound to Protocol II to the Convention on Certain Conventional Weapons (UN) 6 September 2000  
Consent to be bound to Protocol I to the Convention on Certain Conventional Weapons (UN) 6 September 2000  
Consent to be bound to Protocol IV on Blinding Laser Weapons (UN) 25 April 2016  
Convention on Cluster Munitions
Signature (UN) 3 December 2008  
Deposit of instruments of ratification (UN) 28 May 2010  
International Convention for the Suppression of Acts of Nuclear Terrorism
Signature (UN) 16 September 2005  
Deposit of instruments of ratification (UN) 22 September 2010  
Outer Space Treaty
Signature (Washington) 27 January 1967  
Pelindaba Treaty
Signature (African Union) 11 April 1996  
Deposit of instruments of ratification (African Union) 14 March 2002  
Sea-Bed Treaty
Signature (Washington) 8 September 1971  
Deposit of instruments of ratification (Washington) 3 April 1973  
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)
Signature (Washington) 9 July 1968  
Deposit of instruments of ratification (Washington) 20 May 1970