Tell me, you're the one following a proven liar. To give him more chances for more lies?
IIRC the vietnam war wasn't the proudest part of your history, nor did the US gain much from it. Not much excepts thousend of dead soldiers.
Its funny that you mention Nixon/Johnson in the context of Bush.
Just tell me and everyone here where the interest of the US was at this time in vietnam, and what they really achived with this bloody war?

.
Yes, no matter of the cost.
No matter how many americans die in this war.
No matter how much money is spend for this war.
No matter how much international relations were damaged for this war, afterall how can we expect them to understand?
No matter how much new terrorism is created.
No matter of the costs, even when the costs are higher than the original damage.
No matter at long as there is some ass kicking which makes your nation feel good and proud.
No matter...
There are some other ways to find WMDs. Having people from the UN search them. The fact that they didn't find any could be a proof that there are no. Going gun blazing in after claiming to know THAT there are some and to know WHERE they are and then finding nothing is more then stupid.
How would you react when the police storms your house and shoots your family, because they thought you had some drugs? There is a good reason why the police has strict rules and you some civil rights against police harassment. Shouldn't the world policy stick to the same rules. Doesn't have other states the same rights you have and defend (i think the right to have arms in america is also to prevent such things).
Think about it. And don't turn the rights always in your favor.