I don't think the Iraq war critics studied Clausewitz or Napoleon much. War is about GEOGRAPHY. We now surround Iran on 3 sides with substantial military capability in Iraq and the Persian Gulf. When it comes to blows, President Ahmaddeadjihadi will face the full fury of American airpower, seapower, and heavy armor. Yeah, they will get a few of our guys with suicide jockeys, but there won't be much left of their military or government centers.
But darth - war, as you have just noted, is a matter of geography - borders, population etc. If Iran were to be entirely smashed up, power would pass to the Arab Gulf states and fundamentalist regimes such as those in Pakistan. These are not friends of the West.
"War is about GEOGRAPHY. We now surround Iran on 3 sides with substantial military capability in Iraq and the Persian Gulf."
Our troops in the region are little more than targets for Iranian counterattack.