Secretary of State Colin L. Powell’s assertion today that Islamic extremists were operating a poisons training camp and factory in northern Iraq appeared to surprise Kurdish officials, who greeted the claim with a mix of satisfaction and confusion. The officials were pleased to hear an American effort to discredit their Islamist enemies, and to sense momentum toward war to unseat Saddam Hussein. But some also wondered if the intelligence Mr. Powell presented to the United Nations Security Council was imprecise. Full Story