McCain Left Without an Issue

More on Al-Maliki's agreement with Obama's timetable, this time from Marc Ambinder:

This could be one of those unexpected events that forever changes the way the world perceives an issue. Iraq's Prime Minister agrees with Obama, and there's no wiggle room or fudge factor. This puts John McCain in an extremely precarious spot: what's left to argue? to argue against Maliki would be to predicate that Iraqi sovereignty at this point means nothing. Obviously, our national interests aren't equivalent to Iraq's, but... Malik isn't listening to the generals on the ground...but the "hasn't been to Iraq" line doesn't work here.

So how will the McCain campaign respond?

(Via e-mail, a prominent Republican strategist who occasionally provides advice to the McCain campaign said, simply, "We're fucked."