What will break Iran?

With the war between the US and Iran effectively back to square one, what can Donald Trump do to make the Tehran regime back down and go for peace? It won't be from bombing and more bombing. That doesn't seem to work. The only alternative is to destroy Iran's economy. That would require a lot of bombing of all Iran's energy sites which basically allow the country to survive and mount such a leak-free naval blockade that all trade in and out of Iran stops totally. But will Trump go for the jugular? He has largely refrained from destroying Iran's oil terminals, partly because it would have a devastating impact on the Iranian people and world oil prices - thus the global economy. The blockade is back on, so Iran from today will start losing billions of dollars in revenue. But so far that hasn't worked either. As for Trump's announcement that he is going to take over the Strait of Hormuz and charge shipping companies a 20 per cent levy for benefiting from military protection is all hoo haa. You can't denounce Iran for threatening to charge a toll and then do exactly the same. So that won't happen. Basically, Trump is in a right old fix. Whatever he does or threatens to do against Iran, the new mullahs and generals in Tehran stubbornly refuse to cooperate. The war will go on and on and on.