The basic problem is that Bush can't identify his "enemy". He doesn't understand what Al Quaeda is and his vengeance for Saddam is transparent.
Al Quaeda started when the disbanded Mujahadeen reacted to the presence of American troops on Saudi soil. This is what motivated bin Laden and followers to establish their "jihad". They are a sect not unlike the Weathermen in the sixties in the US but with a lot more money and their ideology is fixed in their interpretation of religion. Bush has them confused with the citizens of Iraq which operate on different ideologies and methods of resistance. Bush's "crusade" may appeal to the people who "don't do nuance" but it is a simplistic and ideological driven reactionary response.

Frank