An increasingly likely scenario is that Saddam will flee into exile. If that happens, who wins? Who will claim victory?
Who cares?
As the great one himself, Ronald Reagan, said, "There's no limit to the things you can achieve if you don't care who gets the credit".
We'll just move on to the next threat. Syria? Iran? North Korea? Where ever the opportunity is most ripe for action.
The United States does, since the plan is to get Saddam and his regime out of Iraq and free the Iraqi people. Iraqi dissidents living in free countries already have plans for Western style representative government in Iraq.
THEN, we can deal with Saddam at a later date, while enjoying an intelligence WINDFALL from his post-exile words, actions and movement...until such time as he is quitely dealt with. At least that's the way I always saw the plan. Russia wouldn't be a bad spot for Saddam right now. Putin gets his continued oil contracts, and gets Saddam, who's no doubt behind at least some Chechan terrorism. Better there than an Arab country.