Here's a meme to chew on - the Iraq War is like Barbaro.
Both had fantastic success at the beginning - getting to Baghdad in days, and winning the Kentucky Derby in a blow-out. But then Iraq faltered in the reconstruction/occupation phase and Barbaro stumbled and breaks his leg in the Preakness. Now both have been nursed along for a long time, but it was finally time to euthanize Barbaro when it was clear there was practically no chance he'd recover, and the only humane thing was to end the pain he was in.
Let's euthanize this war to end the pain it is causing the American and Iraqi people.
I came up with this analogy independently this morning, but prior to posting it here I used Google's blog search tool and found this editorial cartoon from today's papers: