Blair, 24 Septemebr 2002: "It [the intelligence service] concludes that Iraq has chemical and biological weapons, that Saddam has continued to produce them, that he has existing and active military plans for the use of chemical and biological weapons, which could be activated within 45 minutes, including against his own Shia population; and that he is actively trying to acquire nuclear weapons capability..."
And later (28 September 2004): "The evidence about Saddam having actual biological and chemical weapons, as opposed to the capability to develop them, has turned out to be wrong. I acknowledge that and accept it."
Powell: (February 5 2003): "Our conservative estimate is that Iraq today has a stockpile of between 100 and 500 tons of chemical weapons agent."
Powell again: "There can be no doubt that Saddam Hussein has biological weapons and the capability to rapidly produce more, many more. And he has the ability to dispense these lethal poisons and diseases in ways that can cause massive death and destruction. If biological weapons seem too terrible to contemplate, chemical weapons are equally chilling."