With Iraq as Exhibit A, U of Chicago law prof Eric Posner (son of Richard, I think) argues for a presumption against “humanitarian” war in the Washington Post.

Many well-meaning people – often, but not exclusively liberals – who otherwise tend to be “anti-war” find themselves with an itchy trigger finger when it comes to humanitarian disasters. But here, as elsewhere, policies have to be judged not by their proponents’ good intentions, but by those policies’ likely consequences.

Link via Matthew Yglesias.