Are you sure that the whole world is along for the ride? If I'm not mistaken, China and Russia are kinda chummy with Iran, and they aren't countries I'd want to see pissed off. That, and this doesn't seem like it's going to end well. Iran may not exactly be a superpower, but they're hardly in the shape Iraq was in when we decided to invade them; I imagine that Iran can and will put up a bit more of a fight.
If there's a draft for this when the shit hits the fan, I'm renouncing my citizenship and moving to Canada.