Geneva Protocol: Protocol for the Prohibition of the Use of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare (1925)
Biological Weapons Convention: Convention on the Prohibition of the development, production and stockpiling of bacteriological (biological) and toxin weapons and on their destruction (1972)
ENMOD Convention: Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques (1977)
Mendoza Agreement: Mendoza Agreement on the Prohibition of Chemical and Biological Weapons (1991)
Signed on 5 Septembre 1991, Argentina, Brazil and Chile agreed not to develop, produce, acquire in any way, stockpile or retain, transfer directly or indirectly, or use chemical or biological weapons.
Joint Statement on Biological Weapons by the Governments of the United Kingdom, the United States and the Russian Federation (10-11 September 1992)
More: The European Union and Weapons of Mass Destruction (Harvard Sussex Program)