Known knowns and known unknowns

From USA Today, April 18, 2004:

President Bush said at a news conference Tuesday, "Nobody in our government, at least, and I don't think the prior government, could envision flying airplanes into buildings on such a massive scale."

It would be interesting to know if there are any historians of presidential administration transitioning working on the hand over of information from the Clinton to the Bush teams.

WASHINGTON, Dec. 8 - More than three years before the Sept. 11, 2001, terrorist attacks, American diplomats warned Saudi officials that Osama bin Laden might target civilian aircraft, according to a newly declassified State Department cable.

The cable was one of two documents released Thursday by the National Security Archive, a research organization at George Washington University that obtained them under the Freedom of Information Act. The other was a memorandum written five days after the 2001 attacks by George J. Tenet, then director of central intelligence, to his top deputies, titled "We're at War."

The June 1998 cable reported to Washington that three American officials, the State Department's regional security officer, an economics officer and an aviation specialist had met Saudi officials at King Khalid International Airport in Riyadh to pass along a warning based on an interview Mr. bin Laden, the Saudi-born leader of Al Qaeda, had just given to ABC News.

They said he had threatened in the interview to strike in the next "few weeks" against "military passenger aircraft," mentioning surface-to-air missiles. The cable said there was "no specific information that indicates bin Laden is targeting civilian aircraft," but added, "We could not rule out that a terrorist might take the course of least resistance and turn to a civilian target."