Atrios: What They Knew; Atrios quotes Bob Graham:

In February 2002, after a briefing on the status of the war in Afghanistan, the commanding officer, Gen. Tommy Franks, told me the war was being compromised as specialized personnel and equipment were being shifted from Afghanistan to prepare for the war in Iraq — a war more than a year away. Even at this early date, the White House was signaling that the threat posed by Saddam Hussein was of such urgency that it had priority over the crushing of al Qaeda. […] At a meeting of the Senate intelligence committee on Sept. 5, 2002, CIA Director George Tenet was asked what the National Intelligence Estimate (NIE) provided as the rationale for a preemptive war in Iraq. An NIE is the product of the entire intelligence community, and its most comprehensive assessment. I was stunned when Tenet said that no NIE had been requested by the White House and none had been prepared. Invoking our rarely used senatorial authority, I directed the completion of an NIE […] Under questioning, Tenet added that the information in the NIE had not been independently verified by an operative responsible to the United States. In fact, no such person was inside Iraq. Most of the alleged intelligence came from Iraqi exiles or third countries, all of which had an interest in the United States’ removing Hussein, by force if necessary.