With the withdrawal of the last U.S. troops from Iraq, we’re finally going to get the answer to the core question about that country: Was Iraq the way Iraq was because Saddam was the way Saddam was, or was Saddam the way Saddam was because Iraq is the way Iraq is — a collection of sects and tribes unable to live together except under an iron fist. Now we’re going to get the answer because both the internal iron fist that held Iraq together (Saddam Hussein) and the external iron fist (the U.S. armed forces) have been removed. Now we will see whether Iraqis can govern themselves in a decent manner that will enable their society to progress — or end up with a new iron fist. You have to hope for the best because so much is riding on it, but the early signs are worrying.