The ultimatim will be along the lines of "Get everybody out of Israel by sundown." It will be delivered to the original sponsors, excluding Russia, of the State of Israel, who Iran believes still control Israel as a puppet state.
I don't imagine there will be an ultimatium. I imagine that they'll just do it.
And probably attack US forces in Iraq too, while they're at it.
After all, I truly doubt if the US would use nuclear weapons upon anything other than a military target in retalliation. The screams from the left and from the "moderates" would be much too loud.
Interesting Nova program on right now. Hi tech US weaponry, when it works, transformation....smaller forces, rapid deployment, 19 days to reach Baghdad. Logistics problems, more liberal yada yada, many Iraqi casualties, picture of child in hospital. Attempt to kill Saddam during first days, outdated information, so civilians killed. Sorry, that's what war is about. Breaking things and killing the enemy. PBS and the rest of the liberal idiots think WAR IS INSANE. All we need to to sit down and talk things over. We have the NYTimes and the rest of the usual liberal suspects bad mouthing the military. The US didn't commit enough troops. We're hard pressed to contain insurgent attacks. Well, not if we take the gloves off. They understand force, a hit upside the head. They don't understand PC baloney.