<P> Investigators prior to Clausen did not have the security clearance necessary to receive the most sensitive information, as Brigadier General Henry D. Russell had been appointed guardian of the pre-war decrypts, and he alone held the combination to the storage safe . Clausen claimed, in spite of Secretary Stimson having given him a letter informing witnesses he had the necessary clearances to require their cooperation, he was repeatedly lied to until he produced copies of top secret decrypts, thus proving he indeed had the proper clearance . </P> <P> Stimson's report to Congress, based on Clausen's work, was limited due to secrecy concerns, largely about cryptography . A more complete account was not made publicly available until the mid-1980s, and not published until 1992 as Pearl Harbor: Final Judgement . Reaction to the 1992 publication has varied . Some regard it as a valuable addition to understanding the events, while one historian noted Clausen did not speak to General Walter Short, Army commander at Pearl Harbor during the attack, and called Clausen's investigation "notoriously unreliable" in several aspects . </P> <P> Some authors argue that US President Roosevelt was actively provoking Japan in the weeks prior to the Pearl Harbor attack . These authors assert that Roosevelt was immanently expecting and seeking war, but wanted Japan to take the first overtly aggressive action . </P> <P> One perspective is given by Rear Admiral Frank Edmund Beatty Jr., who at the time of the Pearl Harbor attack was an aide to the Secretary of the Navy Frank Knox and was very close to President Franklin D. Roosevelt's inner circle, remarked that: </P>

Which statement about the attack on pearl harbor is true