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ASHINGTON - In February, the CIA gave a formal briefing to the National Security Council, including Defense Secretary Donald H. Rumsfeld, Vice President Dick Cheney, and President Bush himself: ''A quick military victory in Iraq will likely be followed by armed resistance from remnants of the Ba'ath Party and Fedayeen Saddam irregulars.''
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The February report was not the only warning Bush received that a guerrilla war was in the offing. According to US intelligence officials who compiled or contributed to the reports, and provided excerpts to the Globe, on multiple occasions in the months before the war the CIA and the Defense Intelligence Agency warned that fighting would probably continue after the formal war. The assessments went so far as to suggest that guerrilla tactics could frustrate reconstruction efforts.
But intelligence officials, former military officers, and national security specialists say the administration instead clung to the optimistic predictions of the Iraqi National Congress, an exile group headed by Ahmed Chalabi, who left Iraq in 1958. Chalabi, who is now a member of Iraq's US-backed Governing Council, is a close Rumsfeld and Cheney ally who had the ears of top administration officials in the months before the war.
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Yet the CIA in particular forewarned policymakers of some of the problems likely to arise, according to one intelligence official who asked not to be identified. The reports, for example, predicted that armed insurgents would attack coalition forces. One prewar report, he said, forecast that after the war ''things would get worse before they get better'' and that there would be a high likelihood of ''backsliding'' - progress followed by setbacks.
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http://www.boston.com/dailyglobe2/222/nation/CIA_warned_administration_of_postwar_guerrilla_peril+.shtml