Al-Baghdadi paid rival for protection but was betrayed by his own

Islamic State leader Abu Bakr al-Baghdadi was able to hide out in an unlikely part of Syria, the base of a rival group, because he was paying protection money to its members, according to receipts for the payments recovered by researchers. But he was ultimately betrayed by a close confidant, leading to his death in a raid by U.S. Special Operations forces last weekend.