If, by "Mission", you mean.....

...Killing over 1 million Iraqis and over 4 thousand Americans, destabilizing the Middle East, alienating most of our allies, weakening our national security, serving as a terrorist recruiting tool, bankrupting our treasury, eroding our freedoms, ruining our economy, depleting our national infrastructure, breaking our military, and destroying our world reputation...

...then yes, by all means, "Mission Accomplished!"

Happy 5th Anniversary, Georgie!