Al Qaeda in Iraq didn't exist until ~2004
That is what ISIS grew out of- and it only got its foothold there because of the chaos created by the war... remember, the war that would only take a few weeks and we would be greeted as liberators?
That war allowed ISIS to be born...
You can say 'no it didn't!' as much as you want, but it doesn't change the facts. You were wrong then, and you are wrong now... except this time you have the benefit of hindsight and you STILL get it wrong...