: This was the kind of prison break officials say could have changed the region, and perhaps even the world, overnight. Nearly 6,000 ISIS detainees, described by a senior U.S. intelligence official as ‘the worst of the worst,’ were being held in northern Syria as clashes and instability threatened the Kurdish-led Syrian Democratic Forces, the guards responsible for keeping the militants locked away and preventing a feared ISIS resurgence. U.S. officials believed that if the...










