"Countries don't knowingly commit suicide in the same way that terrorists do."
Your point is taken, but we don't know that for a country driven by religious fanatics who see death as a reward. Only in the most recent times have countries actually faced total annhilation as a possible outcome of total war. We, as a species are still learning. I would not be too quick to assume that MAD would deter the Iranians in charge -- as opposed to the Iranians as a people.
Neither of us knows for certain, but I'm not ready to exclude such an action on their part as impossible, just improbable.
Well said. No, we can't be sure. We musn't assume either that the operational link between Iran's nuclear weapons and the political leadership is all that firm either, just because it is here.