When is a war truly just—and who gets to decide? Drawing on the thought of St. Augustine and St. Thomas Aquinas, this conversation unpacks how Catholic Just War Theory provides a coherent framework for judging the morality of war.

Msgr. Stuart Swetland applies these principles to real conflicts, including World War II, Vietnam War, and the use of the atomic bomb, while also addressing Ukraine, terrorism, and modern warfare—offering a clear and challenging lens on justice in a fallen world.