Might explain a lot:

Instead, when confronted by his “Saudi” interrogators, Zubaydah showed no fear. Instead, according to the two U.S. intelligence sources that provided me the details, he seemed relieved. The man who had been reluctant to even confirm his identity to his U.S. captors, suddenly talked animatedly. He was happy to see them, he said, because he feared the Americans would kill him. He then asked his interrogators to call a senior member of the Saudi royal family. And Zubaydah provided a private home number and a cell phone number from memory. “He will tell you what to do,” Zubaydah assured them.

That man was Prince Ahmed bin Salman bin Abdul-Aziz, one of King Fahd’s nephews, and the chairman of the largest Saudi publishing empire. Later, American investigators would determine that Prince Ahmed had been in the U.S. on 9/11.

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It would be nice to further investigate the men named by Zubaydah, but that is not possible. All four identified by Zubaydah are now dead. As for the three Saudi princes, the King’s 43-year-old nephew, Prince Ahmed, died of either a heart attack or blood clot, depending on which report you believe, after having liposuction in Riyadh’s top hospital; the second, 41-year-old Prince Sultan bin Faisal bin Turki al-Saud, died the following day in a one car accident, on his way to the funeral of Prince Ahmed; and one week later, the third Saudi prince named by Zubaydah, 25-year-old Prince Fahd bin Turki bin Saud al-Kabir, died, according to the Saudi Royal Court, “of thirst.” The head of Pakistan’s Air Force, Mushaf Ali Mir, was the last to go. He died, together with his wife and fifteen of his top aides, when his plane blew up — suspected as sabotage — in February 2003. Pakistan’s investigation of the explosion — if one was even done — has never been made public.