Also that nagging problem of getting all that oil we depend upon to market, especially when there's that little matter of a Muslim holy war raging on all fronts. Of course, if one really believes that ISIS is going to stop with Iraq and call it a day, good luck with that.
This is a shitty deal. If we withdraw as spectators, ISIS will almost certainly topple Iraq and maybe Syria as well. Then, it's on to Saudi Arabia...if you believe ISIS. I wonder what such a scenario would do to the price of oil and the effect it would have on the economies of the world.
I've got a bad feeling the shit is just beginning to hit the fan.