Bush's policies are clear and resolute. He seeks to defeat the radical Islam that threatens the US with nuclear, biological, chemical and other forms of terrorism at home and in every corner of the globe. What dragon slaying are you talking about?
Attacking al Queda and the Taliban in Afghanistan was in response to the 9-11 attack and was amply justified. Using the 9-11 attack as an excuse to attack Iraq, or for that matter, any of the countries or thugs who rule them in the Middle East is a fool's errand. Absent the oil, which they have to sell to eat, the whole Middle East isn't worth an American sprained ankle. As a threat to the US, no state in the region isn't at least a decade behind the North Koreans.