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.
Whenever I'm on tour and I'm in my hotel room and I'm writing and playing my guitar, I go in the bathroom and I record whatever I'm writing in there. It's just what I love to do.