Nothing. All they can do is dig some new fairway bunkers in the local golf course. I'm more concerned about Iran bluffing and claiming they already have nuclear weapons. That would ratchet up the level of confusion on this issue.
Layers upon layers here.
Hamas/Hezbullha/Syria/Shiites/Iran/CultLeaders/Mahdi
A nuclear bluff would be a strong hand at this point. It would also be a very dangerous one. What was that hand called, 'dead mans bluff''aces and eights'? Israel did accelerate their plans. Iran has to have accelerated their plans for this bluff to actually be a strong hand.