Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean (Treaty of Tlatelolco), 1967
Ratification, 25 April 1969

Treaty on the Non-Proliferation of Nuclear Weapons, 1968
Ratification, 21 February 1980

Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-personnel Mines and on their Destruction, 1997
Ratification, 26 January 1999

Convention on the Prohibition of the Development, Production and Stockpiling of Bacteriological (Biological) and Toxin Weapons and Their Destruction ,1972
Ratification, 16 February 1973