There was the hope of an uprising from the Iranian people, but 30 thousand protestors killed, and now a response to this war, seems less likely at this point.

Two future timelines I currently see as possibilities:

1. The US will pull back, mostly to support Israel and protect transport ships, occasionally firing long distant strikes. (an unlikely best case scenario)

Or

2. A lingering war that will continue through to next presidential election, and used as an excuse to not leave the role as potus. (a more likely horrible scenario)