He overlooks the fact that those murderers and tyrants - who will take power by force instantly, and slaughter up to a million people for having worked with us, and who will crow about it to the rooftops, will then turn the entire country into a base for AQ operations.
We will then have the option of returning and doing it all over again, which no one will believe we will actually do - least of all facing an election in which one candidate will certainly oppose the idea - or letting them have the place, and letting them use it as their new Afghanistan.
"But surely the rest of the Iraqis will finally see what it what and stop them." No. The rest of the Iraqis do not have the courage, the training, the equipment or the ability to take on their home grown thugs. Who will be backed by Iran and Syria, supported by thousands of outside soldiers and tens of millions of dollars, etc. All of them scrambling for a $10 billion a year oil revenue stream, which they will use to finance additional operations against us.
It is just a fantasy, the same old one that if we leave them alone they will leave us alone. Wrap your mind around it once and for all. They will not leave us alone, no matter what we do or where our troops are. Wherever we are on earth, they will look for us and kill us - unless we disarm or kill them, first.
Wars are not optional things vetoed and called off by either party. You can't unilaterally end a war, except by winning it or wiping the other side out. They aren't going to make peace because we leave. They were at war with us before we went and they will be at war with us after. The war is not optional. They started it. Either we finish it, there, or they will. Here.