No need for ground troops. Bunker buster bombs can be dropped out of a C-130 transport plane. Doesn't have to have a stealth bomber or any bomber. If you have air superiority any large transport plane can drop one out of the back.
The elephant in the room is Iran's oil. Sanctions never worked as Iran sold oil to any third world country that needed oil, like African nations, India, China, etc. So, bomb their oil facilities, pipelines, oil wells, loading docks, etc. Bomb their power plants after bombing all their military facilities. They would be back in the dark ages. They couldn't be able to use their own oil for power plants, gasoline for their own vehicles, etc. The only drawback to this is higher oil prices world wide, but how much really? Other countries have oil, we frack and drill offshore. Oil imports if necessary can have no tariffs.
This is an easy price to pay for peace as Iran has sponsored almost all the rebels in the Middle East with rockets, missiles, and weapons. From Yemen to Lebanon, as well as to Hamas. No Iran for a while, peace for a while. Enough is enough. Even Saudi Arabia is doing air patrols over Yemen to keep them from launching missiles at Israel.