While the unwashed rubes, both left and right, fell for that nonsense, anyone with military, intelligence or geopolitical experience knew such claims were political hogwash.
1. Hussein's refusal to let his "palaces" be inspected called for a B-52 strike, not an invasion.
2. The US invading any Middle Eastern country without clear cause was certain to unite more Jihadists than gain their trust.
3. Only fucking morons believed the Iraqis would be so grateful at being liberated that they'd happily give Bush and his oil buddies all of their oil.
FWIW, anyone with military, intelligence or geopolitical experience knew it was only a matter of time before another major Jihadist attack happened on US soil. The idiots obviously didn't learn anything from the 1993 WTC bombing. While the audacity and effectiveness of the terrorist attack on 9/11 surprised many, including me, it wasn't a surprise that they wanted to kill us. This had been happening for years outside the US.
What did surprise me is that so many Americans turned into wimps and lived in fear after 9/11. So much fear that they happily supported the Patriot Act and spit on American Sikhs thinking they were "A-rabs". There was the usual "tie a yellow ribbon" bullshit when we sent our troops to Afghanistan, but most Americans were happy to let it be someone else's son, father or brother.
IMO, the worst thing we did for our nation was eliminate the draft. Fix it to make it more equitable? Sure. Allow a non-military option? Sure. Get rid of it completely? We end up with draft-dodgers and chickenhawks in the White House and Congress.