So why not Pakistan and Afghanistan, and Saudi Arabia who were way more responsible for 9/11 than Iraq?
I’ll tell you, it was about avenging his daddy’s attempted assassination, it was personal.
IMHO the Nixon/Vietnam experience was in Bush's mind as well. Nixon is blamed for Vietnam even though he got us out of it. Part of that is the Dim press blaming everything on Republicans. But part of it is Nixon got us out of it without it being a win. Bush didn't want that with Afghanistan. Afghanistan was looking like a losing war largely because Bush didn't want to fight it mean like we're supposed to if we go to war (especially after 9/11). So to keep from looking like the next Nixon (as far as wartime presidents go, not the Watergate stuff), Bush had to start another war in Iraq to make himself look good.
9/11 should have motivated us to go to war in Afghanistan and Pakistan with venom. Not "win over hearts and minds" and that stuff. We should have been brutal until they surrendered. They weren't made an example of like Japan was. If we had fought Afghanistan like that, IMHO there would have been less political temptation to go to war with Iraq.
I think the plan was to sandwich and eventually overtake Iran. But things didn’t go according to plan...