Trying on pants is one of the most humiliating things a man can suffer that doesn't involve a woman.
The most difficult thing in any negotiation, almost, is making sure that you strip it of the emotion and deal with the facts. And there was a considerable challenge to that here and understandably so.
It was a mistake. On the information we had, we shouldn't have prosecuted the war. We shouldn't have changed our argument from international law to regime change in a non-transparent way. It was an error for which we as a country paid a heavy price, and for which many people paid with their lives.

