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Yes. But the next question to ask is WHY? Could it be that these Saudi operatives were working by order of the royal family, and that the royal family was working with Bush/Cheney to intentionally do this -- as a favor? The cover up, I'm speculating now, is to maintain good relations with Saudi Arabia, because we have such a mutual dependency in terms of buyer/seller of oil. If the FBI established the royals were involed, they have hit a brick well and everything beyond that point is above the FBI pay grade.

FBI deals with domestic issues. It's the CIA that deals with foreign issues such as terrorism so you can't point the finger only at the FBI.

As for motivations, maybe they thought that in order to continue having leverage over Saudi Arabia, they would have to cover this up. It's possible that the Saudis who were involved were linked to the Saudi government but not directly part of it as well.