If a civil war breaks out we will be there even longer. We will evaluate which side we want to win, and help the other side by training them with military knowledge. Then later on in life when we do end up getting the oil, the side we helped will have been trained by our guys, and will come over and do something horrible and we will label them terrorists, and pretend to have no knowledge of where they learned how to do these things.
Not to mention I think we are in Iraq Permanently now.. Or atleast will have bases in Iraq permanently.
RD