BRUSSELS, Belgium — A man looks deep into the camera and pleads, in Arabic: “You, there in Europe, watching this video. I’m calling you.” With urgency in his voice, he refers to children being murdered and women being raped at the hands of the enemy. “We really need you here. This is your opportunity for paradise.” “Paradise” via the
Some 600 youths from Europe have joined Muslim extremists fighting to topple Syria’s government. Officials fear what happens when they return.