In both directions.
https://en.wikipedia.org/wiki/2019_Iranian_shoot-down_of_Ame...
https://en.wikipedia.org/wiki/Iran%E2%80%93U.S._RQ-170_incid...
I totally get where you are coming from. I think this time is different. Trump is pushing testing their resolve in ways we never have before. Other admins have made idle threats but this time we have already bombed them. I think Iran knows our navy is not ready to take on their massive underground cities of anti-ship missiles and there is literally nowhere nearby to reload our missiles that contain a stockpile of missiles for a prolonged engagement from sea. The ships are required to sustain air combat. I think people near Trump are telling we have more capabilities than we actually do. That leaves only boots on the ground or nuclear. We have to retain a percentage of soldiers for all the other countries we are pissing off. Either way I hope they reach a deal or that we back off.
Most people worldwide don't remember, but Iran is most certainly aware that Trump was president when that happened too. Most US presidents tried to find some balance with Iran, but Trump seems to want to be an antagonist.
I don't doubt that Trump's being hyped up for another big strike, though.
For the Iranian citizens I totally agree. They would be absolutely screwed seven ways to Sunday. Many of the Mullah's and military however are deep underground, far deeper and in bigger under ground cities than our bombers can reach. Their government structure is challenging in that somewhere just over 25k Mullah's can step up and take control. I know I am over-simplifying it. The other problem is that Russia and a handful of other countries would likely assist them. I don't know what side Turkey would flip to. We also gave up on the Houthis, though I'm sure others saw that differently. Either way I think they could just wait us out until we ran out of resources. I am trying to find a way to put a positive spin on this but I just can't.