FDR knew without a doubt that Japan was going to attack, and he knew the target. They had broken the code. He even had the Japanese envoys that had a meeting that day in DC, wait until after the attack to deal with them. They were there to tell the US that Japan was declaring war on us. It was neither a sneak attack and unprovoked.
We poked and poked at Japan, until they had no choice. They were embargoed, cut off from rubber sources, and attacked by US military, “loaned” to China.
Did FDR know of the attack just a few minutes before it happened or for many hours before?