Aggression Abroad: Noninterventionism Without National Sovereignty

Libertarians tend to noninterventionists on moral grounds, for which the simplest argument is national sovereignty. Yet, as some have argued, national sovereignty sits uncomfortably with libertarians’ moral individualism. I affirm the interventionists’ rejection of national sovereignty, but offer several reasons for why applying libertarians’ moral individualism to actual wars requires noninterventionism. The first is collateral damage that cannot be justified given interventions’ consistently low probability of success. The second is that creating war zones imposes terror and harm on everyone within a given area, regardless of whether they actually get killed or injured themselves. The third is that a general policy of intervention, and the standing army it requires, has recurring perverse effects on both the intervening country’s population and the world more generally. I then argue that the points raised here against intervention apply to all war, not just interventions, albeit weakened, and distinguish the resulting anti-war position from pacifism.