If the Iranians are mad enough to fight a conventional war against the Americans, they will be ground to dust. That's it.
If they fight unconventional (read Hizb Allah, and google Paul van Ripen and Millenium Challenge 2002) there will be huge problems for the Americans, but not huge enough to make retreat impossible. Peak oil is not an energy crisis. It is a liquid fuel crisis.
It's one thing to fight your neighbor who has the advantage of knowing the terrain as well as you, and whose supply lines are at the very least not exposed and primarily within controlled, sovereign territory.
It is quite another to fight an isolated and demoralized expeditionary force whose supply lines are very exposed and primarily passing through increasingly hostile territory.
I think if you are suggesting that US troops in Iraq and, importantly, allied civilian personel, will be anything but sitting ducks, you are sadly mistaken. I mean, I saw Rambo in Afghanistan also, but the reality is something different... Fai de bèn a Bertrand, te lou rendra en cagant
