Let's also not forget that he was not alone to push for the war. For younger people out there, the New York Times, of all media sources, was warmongering from Day 1.
In Ireland, the major media outlets accepted (mostly, uncritically) the claims of the neo-cons (I don’t remember them treating seriously the reports of UN weapons inspectors who were actually on the ground in Iraq). The only dissenting voice I remember in the mainstream media was Robert Fisk, writing for the British Independent.