From
http://story.news.yahoo.com/news?tmpl=story&u=/ap/20040710/ap_on_go_co/senate_intelligence_report&cid=512&ncid=716<snip>
Bush called the report a useful accounting of intelligence agencies' shortcomings. He defended the decision to go to war, however, as well as his prewar assertions about Saddam's government and weapons of mass destruction.
"We haven't found the stockpiles, but we knew he could make them," the president said. "The world is better off without Saddam Hussein in power." </snip>
Bush can't logically say that this proves the CIA's shortcomings, but that the decision to go to war is still right and the prewar assertions about Saddam's WMD's are defensible.
Bush has two options: continue to trumpet the war and please his supporters. Or admit the war was a mistake and satisfy his detractors. He can't have it both ways.