I suppose Powell might still have some ability to move the conversation forward, but this has always been the problem. The Iraq war has always been packaged purely for domestic political consumption, and specifically for the glorification of Commander Codpiece. The "rebuilding of the schools," the obsession with first "dead enders" then "foreign fighters" and "al Qaeda in Iraq," the constant turning of corners, the denial of the existence of civil war, were all an elaborate reality denial dance. What made it worse was they believed their own propaganda.
Thanks for all you've done for us, oh Wise Men of Washington.