Iran has a crap hand and the US/Israel have enough chips that they can bully Iran with the pot. But Iran just has to make it to the next hand, that's how they win. I think it was Kissinger (rest in piss) who said guerillas win by not losing and conventional forces lose by not winning. In that same vein, an extended air campaign will be damaging to Iran but it isn't going to boot them from the card table.it's a poker game where Iran has a 3-7 off suit going all in against two players with aces and kings and the flop comes out with aces and kings. It is just a dumb move...
With Israel's intelligence paired with the US...I'd go all in on the USA and Israel. And anyone that thinks there are no boots on the street in Iran by both militaries has their head in the sand. Special Forces and Special Ops are in places no one even know
By boots on the ground I mean conventional ground forces. There isn't a significant enough presence of armed opposition groups in Iran outside of small pocket of Kurds in the north west and Baluchis in the south east around Sistan and Baluchistan. There's nothing approaching the Northern Alliance in Afghanistan that the US can support with SAD/SOG or other, nonconventional, forces. Again, the IRGC has a monopoly of force within the country. It's far more likely that regime change in Iran looks like the IRGC cutting the Clerics out of the picture than Shah 2: Return of the Shah.