One of the debated aspects of the study of terrorism over the last few years has been the likelihood of using weapons of mass destruction (WMD) by terrorists. A rash of terrorist spectaculars, pushing as never before the possibility of WMD use by non-state actors into the spotlight, has brought the immediacy of the question home, Aum Shinrikyo’s Sarin gas attack on the Tokyo subway in March 1995 represented the first large-scale use of mass-casualty weapons by ...