"Cordell Hull, aging ex-Secretary of State, snapped back in reply to the section of the report which had implied that he was partly at fault for the disaster because his actions had precipitated a crisis. In a hitherto unpublished letter, Hull pointed out
(1.) that he had personally advised the general staff on 25 November, 1941 that war was imminent, and (2.) that his final negotiations had not included any ultimatum that was a spark to set off the Asiatic conflagration."
Additional articles about the Pearl Harbor attack can be found here...