John Mueller of the University of Ohio spoke at ICSR on 19 June 2008 about the likelihood of atomic terrorism, arguing that the threat from terrorists seeking to acquire a nuclear device has been exaggerated. He described the steps involved in carrying out the process of obtaining nuclear materials, and provocatively concluded that the likelihood was microscopic. This was followed by a lively discussion which weighed the pros and cons of Mueller’s argument. It also explored wider issues such as the threat from terrorism generally.