Since at least as early as the eighteen century, classical liberalism, and its modern variant libertarianism, have opposed warfare except in cases of obvious self-defense. We see this anti-war position clearly among the anti-federalists of eighteenth-century America (who opposed all standing armies) and more famously within George Washington’s Farewell Address. Thomas Jefferson frequently inveighed against war, although in moves typical for Jefferson, he acted against his own professed...
