Again, this assumes rational behavior.
Doesn't take into consideration martyrdom, fanaticism, etc.
They've had a lot of opportunities to act irrationally and fanatically. I know you don't agree, but I think,
so far, they've acted extremely rationally, cautiously and intelligently. I mean they've already managed to get the U.S. to sign one surrender document and have been able to make the U.S. think twice about going through with another massive attack. They've driven out the enemy from their bases in the Middle East, perhaps permanently. However this ends, this may mark the time when Iran along with the 'Axis of Resistance' along with China and Russia forced multipolarity on the world, as opposed to U.S. hegemony. We don't have to love Islam or the regime to see that. Where's the irrationality and fanatical suicidality? Furthermore, Iran was intelligent in investing in cheap missiles and drones and little speed boats instead of for example an air force or a big navy.
As I've said many times before, Iran could destroy Israel with conventional weapons, they don't need a nuke for that. But they haven't been suicidal fanatics. They are ready to die for their cause, yes, but they obviously want their civilization to go on.
Saudi has been a breeding ground for Sunni Salafist extremists. The 9/11 attackers came from there. This is who Trump wants to give nuclear. In my view the Sunni are the true extremists and terrorists. But the U.S. of course has built and given aid to all these terrorist groups like Al Qaeda, ISIS, Hay'at Tahrir al-Sham (HTS) etc. Trump blamed Obama for ISIS but then Trump helps and praises rebranded Al Qaeda leaders himself. The U.S. helped the Mujahideen of Afghanistan, that later became the Taliban, to goad Russia into 'their Vietnam' in Afghanistan.
Rambo III end credits. Hollywood of course was a very powerful propaganda arm of the U.S. deep state, but Hollywood is as good as dead now.