That's the conclusion I have come to; he was commander & chief after all. He took actions that would likely led to war with Japan, despite the reality that our military was not ready. Admiral Richardson, who warned about the vunerablity of PH was removed from command, for doing so. In one account I read, he was told he "hurt the presidents feelings". I understand others were also at fault. The Brits used radar to help win the BoB, in 1940. So, it was clear, radar was effective and a working, well staffed radar station, with the abilty to warn the air fields and harbor, should have been in place. All communications should have been synchronized, between Army & Navy. These things should have gotten done by Short & Kimmel. I also question moving the fleet to Pearl, in the first place. The older battleships should have been protecting the US coast, at 21 nt, that's about all they were able to accomplish.