The US literally offered to hand them enriched uranium if they wanted to build a civilian reactor.

And after unilaterally pulling out of the JCPOA, it's not a surprise that Iran didn't believe that the U.S. would fulfill that promise. We haven't exactly been willing to live up to our prior commitments lately, which makes it somewhat hard to use new ones in dealmaking.

Sounds like Bridge and Power Plant day get here sooner rather than later plus B-52's visiting their coastline.

Except that's not likely to work. Sure, we can blow up bridges and power plants all day long - those are large fixed targets. But the stuff they use to shut down the straits isn't like that. It's small and portable and can be deployed from anywhere. They don't even need dedicated launch vehicles - these things are small enough to be carted around on ordinary commercial box trucks.

You can't defend against it with air power. You need to send in troops to seize the area.