[jdege]

The best account of what the USN knew and didn't, before Pearl, is Edwin Layton's And I Was There. Layton ran Pacific Fleet Intel through the war. He worked directly under Nimitz, Rochefort worked directly for him.

[John S Mosby]

That’s great- then he worked for family members above his pay grade. Through talking about this- FDR and Lord Marlborough aka Churchill set this all up. The Nazis were never going to beat the UK, and the Soviets would have kicked their a@@es for the same goals of what they gained at Yalta..client states. And, the US would still have destroyed the Soviets and probably the chi-coms... sooner.