The militarized nerve agents were originally synthesized as insecticides, before being used in World War II, and subsequently by Iraq against Iranian troops and Kurdish civilians, and by terrorists in Japan in 1994 in Matsumoto, and 1995 in Tokyo. They are the most toxic of the known chemical warfare agents. They are named Tabun, or "German agent A" (GA), "Sarin" (GB), Soman (GD), Cyclosarin (GF), and "Venemous" (VX) [1] . Their toxicity increases from GA to VX. They cause morbidity and mortality at extremely low doses [100] , persist in the environment for long periods of time, and can be released from contaminated clothing, skin, and secretions.