The Turkish invasion of Kurdish-held territory in northern Syria raised new fears of a resurgence of the Islamic State on Friday, as five militants escaped from a Kurdish-run prison and the extremist group claimed responsibility for a bomb that exploded in the regional capital. As Turkish troops began a third night of airstrikes and ground incursions, Kurdish fighters said they had thwarted a second attempted jailbreak from a detention camp for families of Islamic State members. The moves compounded a mounting sense of turmoil in northeast Syria, where tens of thousands of residents were reported fleeing south. The Turkish government said its troops had advanced five miles inside part of the country. Several major roads have been blocked and a major hospital abandoned. Since Wednesday, Turkish forces have pummeled Kurdish-held territory […]