That won't happen. Americans have become too civilized (read soft/weak) to deal effectively with the uncivilized. In this part of the world the word respect is synonymous with the word fear. If you want these people to behave, you must first kill half of them and then the remaining half just might behave. If they don't, then you just may have to halve them again. We aren't going to do that, so we just may as well leave.
I came to that conclusion long ago.