WikiLeaks discloses new details on whereabouts of al-Qaeda leaders on 9/11

On Sept. 11, 2001, the core of al-Qaeda was concentrated in a single city: Karachi, Pakistan.

At a hospital, the accused mastermind of the bombing of the USS Cole was recovering from a tonsillectomy. Nearby, the alleged organizer of the 2002 bombing in Bali, Indonesia, was buying lab equipment for a biological weapons program.