Jamal Ahmed Al-Fadl still has his face but not much else of his original identity. He was once a trusted lieutenant in the Jihadist organization of Osama bin Laden. For the past five years, he has been known in the corridors of the FBI only as CS1--Confidential Source 1. Now he has a completely new identity under the federal witness-protection program, because he is spilling the beans on the world's most-wanted terrorist.
Al-Fadl sat in a New York City courtroom last week telling the world the intimate details he has been revealing to U.S. investigators over the years, about how bin...