http://awakeandarise.org/article/PearlHarbor.htm
I would be interesting in reading more about the source douments for this:
On January 27th, 1941, eleven months before the attack, our U.S. Ambassador to Japan, Joseph Grew, sent a message to Washington stating: “The Peruvian Minister has informed a member of my staff that he has heard from many sources, including a Japanese source, that in the event of trouble breaking out between the United States and Japan, the Japanese intended to make a surprise attack against Pearl Harbor with all their strength….” But FDR ordered the Pacific fleet to be kept at Pearl Harbor anyway instead of its normal berthing on the U.S. West Coast.
James Perloff informs us that after meeting with President Roosevelt on October 16, 1941, Secretary of War Henry Stimson wrote in his diary: “We face the delicate question of the diplomatic fencing to be done so as to be sure Japan is put into the wrong and makes the first bad move — overt move.” Then, on November 25th, 1941, the day before FDR’s administration sent an ultimatum to Japan’s ambassadors, Stimson wrote in his diary: “The question was how we should maneuver them [the Japanese] into the position of firing the first shot….”