In the wake of the June 2015 Sousse attacks, in which 38 Westerners were murdered by an Islamist who had apparently been seduced by an associate of Abu Qatada, Moore wrote an essay the thesis of which was that ISIS and its fellow-travellers truly believe only it can defeat the conspiracy that runs the world and that there is no possible common ground. He concluded that "It is not paranoid to say that there is a deadly enemy within [the UK] and not intolerant to want to defeat it."