There are only two other reasons you could infer from the lack of willingness on Bush's part to proceed.....
1. We are not really afraid of Saddam and can afford to take the time....Hhhmmmm I doubt that is the case
2. We are really afraid to act because we are afraid of Saddam's ability to retaliate and therefore we are bluffing....Hhhmmm, do you all really think we have deployed 150,000 troops and have damn near made the island of Diego Garcia sink because of all the stuff we have on it to bluff this guy? Maybe, but.......
I think we are just making damn sure we can kill this guy off once and for all. Sure we will take on the risk of new terrorism, but we are just making militarily sure that we can get this done right this time......my dad always used to say...if you are going to kill the king, make sure he is dead.....