Let them fight it out and kill each other etc. Then the world will get mad because we didn't do something. The USA is in a no win even at home with most of the far left.
Do I think we sit back and watch? Eh, I do but I don't.
I don't expect us to do anything big but I wouldn't be shocked if we stuck our nose in this mess for what we THINK would be a short time but then nonetheless turns longer