Bombing isn’t going to do squat to facilities buried a mile underground. If you want to take them out you need to send in troops. Unfortunately the Pub controlled Congress killed the bunker buster nuke program under W’s administration.
This also assumes the mullahs are going to sit back and do nothing. Military option means war. The way to win wars is to kill the enemy leaders and replace them. Regime change is the key.
If you can’t get into them, you can’t use them. It’s called radiation.
"Seat of government ring a bell?"
That’s it! Emulate chickens. Let ‘em build up, then finish them and their allies during the nuclear exchange. That won’t take long at all.