I know. They are simply so stupid and myopic that they could never plan such a thing, let alone fly planes in co-ordinated formations, or locate Hawaii on a navigational chart. Uncle Sam however, is capable of controlling such inferiors at long distance and controlling the actions of the IJN using the same programmed flight control systems used to make 9/11 happen. These were sent back in time from a future USA, and used by special CIA covert op's time travellers to make the Kido Butai sail out from Kure, up to the Kurile Islands, and then all the way to Hawaii.
And guess what? There was no one in the planes that attacked PH either. The pilots were kidnapped for thought control experiments on farms in what was later to become Pakistan and later handed over to Zia ul Haq for training special Taliban drone fanatics, for the future war to be fought in Afghanistan in the 1980's.
This is how the super-capitalists of the future arranged for all the wars in history from the conquest of Greece by Darius to the invasion of Grenada by Ronald Reagan that would make the great fortunes they needed to create all these high tech control systems that they could later use to cement their financial success through war and plunder in the past.
Long live Comrade Stalin! The great sheepherder!