On October 3, 2013, Mohammed, a sixty-year-old finance manager from Raqqa, in northern Syria, was driving a friend home after work when a black vehicle cut him off and four men wearing balaclavas bounded out. They were fighters for the Islamic State of Iraq and the Levant (now known simply as the Islamic State). “We just want to talk to you. It will only take five minutes,” one of the men said to Mohammed, who asked that I not reveal his last name. They blindfolded him and drove him to a building in the city center, where he was put…