If the conspiracy theorists are right about FDR sacrificing Pearl Harbor to be able to "get into WW II", then you've made my argument for me. For, it was so vile a notion that the US would enter a war when it had not been attacked that it couldn't be done until we were attacked.
Am I not making this clear? The point is that Dubya went to war with Iraq on the basis that we were "under imminent threat" - NOT that we had been attacked. That makes his lies worse because it is the first time that a sitting president has lied to get us into a pre-emptive war without the thinnest veiled argument that we had been attacked first.
We attacked first (and now it should be clear to all) without provocation.