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Both Mohamed and Al-Fadl are shady witnesses: ex-terrorists and marked men who have betrayed powerful people with long reaches. All that stands between them and a hit man's bullet is the Justice Department, and defense lawyers will try to rattle their credibility by arguing that they will say anything to protect themselves. Of course the U.S. hopes their compelling evidence will convict the four men currently on trial. But the real target is still bin Laden, indicted in November 1998 on 238 counts of conspiracy and still out there, masterminding the unending Jihadist threat of terror. Investigators know from the details piling up in New York how his organization works. But what they really need to know is when and where he will try to strike next. Or how to get him before he does.
--With reporting by Massimo Calabresi and Elaine Shannon/Washington