I show a lot of interest in vice issues. I belong to a population that has been—fairly or unfairly—associated with vice. But in a sense, vice legislation is small potatoes. The biggest thing separating conservatives from libertarians is the question of war. As I see it, there are three distinctively libertarian arguments against war. These are over and above the obvious objection to war, which is in no way particular to libertarians: war is intrinsically a calamity and an evil. These three arguments could each be thought of as particularly libertarian takes on why war is bad, but they should...