Biological and Toxin Weapons Convention (BTWC) of 1972 Subject: International Conventions Context: For bio-weapons, all we have is the Biological and Toxin Weapons Convention (BTWC) of 1972 with no implementing body. Concept: Biological weapons Also called germ weapons, they are any of a number of disease-producing agents—such as bacteria, viruses, rickettsiae, fungi, toxins, […]