I'd just as soon see these people destroy each other in internecine fighting, since none of them are friendly toward us. Keep the balance of arms such that no side can win, but they can go on killing each other indefinitely. Same principle for Afghanistan. Keep the pot on a low boil and let neither side win. Let them kill each other rather than target us. This may be cynical, but the principle has been around since the Egyptian myth of the Ship of Ishtar.