We've done it before - will we do it again?
Glenn Reynolds quotes J.D. Johannes as asking, "is it possible to win a war on the ground, and lose it in Congress?"
Well, we've done it before.
Several years ago, Lewis Sorley provided an antidote to the conventional wisdom, a remarkable book entitled A Better War. Building on his excellent biographies of Army generals Creighton Abrams and Harold Johnson, Sorley examined the largely neglected later years of the conflict and concluded that the war in Vietnam "was being won on the ground even as it was being lost at the peace table and in the U.S. Congress."
I've been pretty contemptuous of the whole "Iraq = Vietnam" meme, but there sure are similarities...