The situation is pretty serious. I doubt they would nuke Iran but a military attack on our infrastructure is almost a given unless we want to believe that Trump is a pacifist who doesn't like war, which is ridiculous if you ask me, or the Islamic Republic wises up and builds some actual deterrence power (i.e. strategic nukes) instead of fairy tales about super duper weapons for her gullible followers.
The Trump administration does have some anti-war people in it. But there is no guarantee that Trump would listen to them, or even the next US president would follow his footsteps.
I think a highly likely scenario at this point is that the IR will sign a deal with the US. The US will most likely remove some sanctions on Iran and the Islamic Republic will send our enriched uranium abroad to Russia (being the Russian vassals they are). At that point, there is no guarantee that the US will not attack Iran directly, or indirectly through Israel. The later is highly likely. The US will be able to say that they didn't violate the deal but they couldn't stop Israel.
Strange things are happening in Iran. Pezeshkian is also our strangest president so far. Even more so than Ahmadinejad. And Zarif has screwed Iran so bad that we have literally no option but to extend the JCPOA in one way or another or prepare for the worst scenario.
