Thomas Aquinas on War and Peace

Inquiring ''whether any war can be just'', Thomas Aquinas famously responded that this may hold true, provided the war is conducted by a legitimate authority, for a just cause, and with an upright intention. Virtually all accounts of just war, from the Middle Ages to the current day, make reference to this threefold formula. But due in large measure to its very succinctness, Aquinas''s theory has ...