https://marco.org/2008/05/13/i-think-this-whole-if-i-knew-now-what-i-knew
I think this whole “If I knew now what I knew then” argument is a bunch of self-righteous handwashing. Americans overwhelmingly supported the Iraq war. The arguments presented to the Americans may have been incomplete in detail—but the essence was conveyed pretty clearly. The Bush administration promised a war. What did you think it would be, a tea-party?