I could be wrong, but it seems like the US has ulterior motive for Iraq invasion. Like, easier access to Iran?

I know that Bush's 'war on terrorism' is just a facade for covering up his real intentions. All this time I thought maybe his real motivation for invading and occupying Iraq was all about oil. But I'm beginning to think there's more to it than that. I'm thinking it's still about oil, but on a much larger scale. I think Iraq was just a stepping stone, strategic placement of US armed forces. Suddenly the focus has changed, and all eyes are on Iran and their "Nuclear intentions". As if there isn't enough crap to deal with over there already! Now we have to worry about a major confrontation with Iran too? If I could ask the government just one question, and they HAD to be totally honest in their answer, I'd say, "Allright Bush- No more B.S. What are we REALLY doing over there???" I wonder what he'd say...