Huge mistake. As I said before, we didn't move on Iran back in 2005/2006 when they were killing our guys in Iraq precisely for the reasons we're seeing come into play now with Iranian retaliation. We've dealt with Iran quietly for over 45 years with sanctions, and covert action. Some at Langley and in the US Senate have pushed for more aggressive covert action, but the Middle East is a complex place where we have to consider Saudi, Jordanian, Egyptian, Turkish, UAE, and other interests with each move we've made. Nixon screwed us with the Petrodollar, and even though we are oil-independent it has not relieved us of our responsibilities in the region.
In short: We're screwed.
So we've tried to do the dance in the Middle East, but 9-11 sent us off to Crazy-Town, and for reasons beyond rational thought, Americans returned Trump to the White House. The United States is now run by some of the stupidest, corrupt people in human history. And I have no idea how this all ends.