From the Real Clear Politics Blog - The Case for War. Excerpt follows:

"...The implication of Bush's words were clear and supremely significant: in the aftermath of 9/11 America would no longer tolerate Iraq's deception, its cat-and-mouse games, its flaunting of international authority. The burden of proof on WMD, which for so long had rested on the international community's ability (or lack thereof) to make a case, shifted directly to Iraq. It was Hussein's responsibility to come clean once and for all, to open up to inspections and make a full and complete accounting to the world..."