"How do you see this ending?"
Do you really want to know? Okay, fine - I think this is it. In so much as it is possible for "the world to end" we are here. I believe Trump is delusional, surrounded by sociopaths who will convince him to attempt to take Kharg Island. I believe that operation will fail, catestrophically, and that US casualties will be staggering. And then I believe Trump will order his military to nuke Tehran.
And after that, all bets are off.
I'm sorry. It's what I see.