Many of his foreign fighters come from Afghanistan -- men like Murad, who is now being held in Aleppo as a prisoner-of-war... All he had wanted was an Iranian residence permit, he says... he found himself fighting as a mercenary in the Syrian civil war on the side of the Bashar Assad regime... When a violent explosion caused the house he was in to collapse, he found himself thinking about his daughters, he says. "I screamed and thought I was suffocating. And then, everything around me was quiet." Men arrived and pulled Murad, who was still screaming, out of the...