Few answers appear in the probe of students in Netherlands suspected of ties to Al Qaeda AMSTERDAM — The guys around the scuba school laughingly called them the "Al Qaeda Diving Team." But for law enforcement officials, it was no joke. Late last year, Dutch counter-terrorism agents investigating a possible Al Qaeda recruitment cell grew interested in the school because a man suspected of recruiting terrorists had become a certified diver and studied to be an instructor there. Iraqi-born Kasim Ali was one of between 50 and 150 Muslim men who had taken classes in recent years with the same...