Into which city's subway system was the poison nerve gas sarin released on 20 March 1995?
Nerve agent times on other Japanese, most notably the Tokyo subway sarin attack. In the Gulf War, no nerve agents (nor other chemical weapons) were used, but a number of U.S. and UK personnel were exposed to them when the Khamisiyah chemical depot was destroyed. This and the widespread use of anticholinergic drugs as a protective treatment against any possible nerve gas attack have been proposed as a possible cause of Gulf War syndrome. A widely publicized use of nerve agents was the 1995 terrorist attack in which operatives of the Aum Shinrikyo religious group released sarin into the Tokyo subway system.
Tokyo subway sarin attack out into the train car and stations. This sarin affected passengers, subway workers, and those who came into contact with them. Sarin is the most volatile of the nerve agents, which means that it can quickly and easily evaporate from a liquid into a vapor and spread into the environment. People can be exposed to the vapor even if they do not come in contact with the liquid form of sarin. Because it evaporates so quickly, sarin presents an immediate but short-lived threat. The team of Ikuo Hayashi and Tomomitsu Niimi were assigned to drop and puncture two sarin packets