The Terror Strategist: Secret Files Reveal the Structure of Islamic State

By Christoph Reuter From DER SPIEGEL Aloof. Polite. Cajoling. Extremely attentive. Restrained. Dishonest. Inscrutable. Malicious. The rebels from northern Syria, remembering encounters with him months later, recall completely different facets of the man. But they agree on one thing: "We never knew exactly who we were sitting across from." In fact, not even those who …