I can still see the Pentagon possibly taking down Iran with a full scale invasion.  That card is still very much on the table.  Much of that, I think, is going to depend on Iran's next move.  Trump did basically tell the Iranians they are now number one on the Pentagon's target list.  Doing so gets the Iranians out of Lebanon, Syria, Palestine, and Yemen, and also secures the Persian Gulf.  It also gives America access to the Caspian Sea to counter the Russians there. America has every strategic reason to do this, and it also secures Israel.   2021 - Trump's second term -  that's how long Iran has to make a deal, I think. Every American president since Jimmy Carter has gone to war.