Weeks before the Pearl harbor attack happened, someone was painting graffiti all over town in I think, new York the words, "Remember Pearl Harbor." It was instigated by the US. We cut off oil and steel supply to Japan amongst other things prior to the attack. A day or two before the attack, the navy sent out the 2 or 3 brand new state of the art aircraft carriers on maneuvers so they wouldn't be harmed. A friend of mine's great uncle was an operator of a brand new technology there on 12/7/41 called radar. He saw the aircraft coming over the ocean on the screen. He called or radioed the command and reported what he saw. They told him that there was something wrong with the equipment and to ignore it.