Saudi Arabian Defense Minister Prince Sultan bin Abdul Aziz must have privately cheered last week after the U.S. announced that thousands of its troops stationed in his country would soon be gone. Their posting has long been a prickly political matter for the Saudis and has provided a fat target for al-Qaeda's propaganda. Osama bin Laden considered the foreign military presence sacrilegious and made the removal of U.S. soldiers a central objective of his holy war against the West.
But the Prince's bin Laden--related troubles may not be over, and not only because the terrorist leader is still gunning for...