Bush and his cohorts start an unnecessary and illegal war in response to a terrorist attack, where it would have been much more rational—and effective—to respond as if it were a criminal act, which it was. Going into Afghanistan was quite probably justified, but the job was unfinished because Bush then started a war against a country that didn't have anything to do with the attack.
He stands there with his bare face hanging out and proclaims Iran and North Korea to be part of an "axis of evil," looming over them and saber-rattling until they acceleration their nuclear programs more out of fear of the American Colossus (led by a very small man) rather than any aggressive intent on their parts.
Now he wants to restart the Cold War.
That little weasel is the most dangerous human being on the planet!