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To underscore his argument that intelligence agencies had acted independently, Mr. Tenet did note that intelligence analysts had never portrayed Iraq as presenting an imminent threat to the United States before the American invasion last March. Some Democrats, including Senator John Kerry of Massachusetts, the front-runner for the Democratic presidential nomination, seized upon that reference as evidence that the White House had no foundation for President Bush's prewar claim that the threat posed by Iraq was "grave and gathering."
With American teams still hunting in Iraq for weapons of illicit weapons and information about them, Mr. Tenet cautioned repeatedly in his speech that it was too soon to draw firm conclusions.
But among the elements of what he called a "provisional bottom line," Mr. Tenet said intelligence agencies "may have overestimated the progress" that Iraq was making toward development of nuclear weapons. He also acknowledged that the prewar assessment that Iraq possessed stockpiles of chemical and biological weapons, which remains unsubstantiated, was based in large part on reports relayed by a friendly foreign government from human sources whose information the United States has still been unable to corroborate.
http://www.nytimes.com/2004/02/05/international/middleeast/05CND-INTE.html?hp=&adxnnl=1&adxnnlx=1076004125-de3jsfW+9cKCMkBbvcRspg