https://www.dailymail.co.uk/news/article-15643983/Trump-depl...
https://timesofindia.indiatimes.com/world/middle-east/why-th...
If the Marines actually face well-armed zealots, it's going to look far too much like WW II in the Pacific. Are the US-ians ready to re-experience such casualties? Cuz I expect the zealots would be willing to do so. And Ukraine has shown the power of man-portable weaponry against the traditional tools of 20th century military operations.
Iranian missile capability is almost extinguished as it is, and drones are to be defended from using Ukrainian interceptors - first line of defence, on the ground on the coast, and second line, on ships themselves.
Ah, and Iranian electric grid needs to be knocked out, and kept like that. It was done easily in Iraq in 1991. It alone prevents nuclear enrichment for the lack of electricity.
It will perhaps never result in victory, but sustain suppression may be enough, Cuba-like.