Help from an Unlikely Ally

For six months, German investigators wondered how they had managed to lose track of a 300-lb. terror suspect. Mohammed Heidar Zammar, a Syrian-born German citizen, had been questioned and put under surveillance after 9/11 because of his close ties to Mohamed Atta and other hijackers. But the Germans didn't have enough evidence to arrest him, and when he arranged to travel to Morocco, officials gave him a temporary passport and let him go. Zammar left on Oct. 27--and vanished. The Germans had no idea where he was until last week, when they learned that Moroccan officials had arrested him and deported...