We did. And it's a damn good one.
"We" created the Iraqi front in 1991. The war was put on hold but Saddam violated the peace agreements by continuing to acquire "forbidden" weapons (not forbidden to ALL nations, just to a "convicted felon out on parole"). Saddam re-ignited the war. He was offered the opportunity to step down and did not. He made his case on SeeBS interviewed by Dan Ratherbiased.