You are assuming that Ahmadinejad is sane. I think he may want this very thing. Who is going to stop him? He would sacrifice Iran cause he would think he's going to usher in the 12th Imam and maybe be safe. If not, he'd still get his virgins. Not a rational enemy.
I know the guy is nutso...there are ways of eliminating folks like that and those Arabs know just how to do it...