"How did a group of religious fanatics, clad in black pajamas and armed to the teeth, manage to carve out a violent, fundamentalist 'Islamic state' in wide swaths of Syria and Iraq? How did the widely celebrated revolution against Syrian dictator Bashar Assad descend into a movement led by a psychopathically violent band of jihadists dedicated to the destruction of America? And just who are these brutal Islamic militants ... beheading Western hostages...