Harry S., after all, is more than just a witness to firing squads and decapitations. He also says that on several occasions, IS members tried to recruit volunteers for terrorist attacks in Germany. In the spring, just after he first arrived in Syria, he says that he and another Islamist from Bremen were asked if they could imagine perpetrating attacks in Germany. Later, when he was staying not far from Raqqa, the self-proclaimed Islamic State capital city, masked men drove up in a jeep. They too asked him if he was interested in bringing the jihad to his homeland. Harry S. says he told them that he wasn’t prepared to do so.

“Merkel, you dirty dog, We will take revenge.”