Addendum to the previous post's implied link of 9/11 truth and Peal Harbor truth: here is the brief from the left on whether the US provoked Japan for a casus belli. Usually this assertion comes from FDR-haters on the right but a digger into classified Navy documents thinks we did it and did it for good cause: fighting Hitler at a time when most of the US citizenry opposed European intervention. Causing the deaths of 2500 Americans and then lying about it would be pretty dastardly but we're supposed to take the long view, or global view, of what the war accomplished.
As for American "isolationism," given what we now know about ties between the US financial sector and German industrialists in the run-up to WWII, the true paranoid has to ask how much of that "stay out of Europe" sentiment was also manipulated.