A couple of scud delivered nukes from a freighter in the Gulf would cripple half the US and there would be no way to determine who to retaliate against. What if it was determined ISIS is responsible (one of the more likely scenarios) blowing up the Middle East doesn’t help to feed 175 million starving Americans. Telling ISIS you will destroy the Middle East more than likely wouldn’t deter them either.
If you could share some scientific, factual information supporting that it would be useful.