I personally think there is abit of over reaction and hysteria with Trump coming back to the WH
Yes his unpredictable, he says allot mostly lies and wants to be a strong man who loves a deal. If you can understand his mentality then it should be used to ones advantage.
I know its a unpopular move but I think direct talks with Trump may give a positive result for Iran. The alternative is yahu in his ear drumming war.
Even war is not straight forward. The conflict in Ukraine wont end unless Putin gets his way, which is ensuring Ukraine remains neutral and they will want to hold onto territory(Donbas, Crimea). No matter how much Putin and Trump respect each others hard man look, Russia will unlikely compromise on that.
Secondly, a peace treaty and for Russia to come back in the western fold could take years. Russia can't dump its current allies so Iran needs to leverage from them the tech they need tor their defence.
Finally oil embargos on Iran will also be tricky, India, China for example dispite western sanctions continued to buy Russian oil. Russia is much more sanctioned today than Iran. With Trump loving tarrifs like its a new 21st century discovery you will see high inflation in Europe and the US, most major european economies have recession jitters already, cutting Iranian oil from the market will push up prices further, increase interest rates and reduce overall GDP around the world.
Trump will huff and puff and pressurise, if Iranian leaders dont want to engage him then they need to take a tough line as well including in retaliating to Israeli provocations.
Trump only respects strongmen.