LOL. You can win the war without ever going to battle. That’s the goal - or at least it should be.
I seriously would drop leaflets all over Iran advising the citizens that the World will not let the Mullahs have access to nuclear weapons, period, even if it means a military attack against them. I would further advise the citizens that their best bet to avoid such an attack would be for them to rise up and overthrow the thugs that have taken over their country for 30 plus years. Given the choice of doing battle with those of the military who would turn against their own people and dealing with the kind of attack it would take to destroy the regime’s nuclear aspirations the former is much better than the latter.
I know this is meddling with the internal affairs of a sovereign nation, but the alternatives are much worse. I’m sure if the world considers advising a revolution to overthrow the Mullahs an act of meddling they will be much less happy with the kind of meddling it will take when the world has to move to deny Iran a nuclear capability. The choice should be theirs.