[mythrwy]

Many of their military assets are underground out of reach of bombers. And you need somewhere to stage out of. Probably not the Gulf bases that are being wiped by missiles and drones at the moment. The aircraft carriers have been having issues and are being pushed back out of missile range. So it becomes more difficult and expensive to keep the bombing up.

[RationPhantoms]

I mean the answer to underground facilities is you just keep bombing the entrance which is exactly what they've done. Iran still has insane supply levels of ballistic missiles so the US/Israel are eradicating their tele-launcher fleet.