The grief and outrage that Cindy Sheehan and the other dissenting military families have evoked this week in Washington, D.C., is palpable, as is the evidence they muster of just how careless this administration was in putting their loved ones at risk for the Iraq war. But in calling for an immediate withdrawal, the peace movement can't duck a central question: Just how do we leave On Friday, Sheehan appeared on a Congressional Black Caucus breakfast panel with General Wesley Clark, the former NATO commander and presidential hopeful, who was there to address the issue of whether the U.S. can...