In the Gospels, Jesus is portrayed as an idealist, even other-worldly, from the standpoint of the political domain. To be sure, he knows how to alienate the Temple hierarchy enough to be put to death, but he stays clear of the Zealots in their militaristic rebelliousness against the Roman occupation. Give what it Caesar’s unto Caesar. The just-war theory developed by Augustine and Aquinas seeks to bring that gap—to make the idealist of the Gospels more relevant practically to the politics of international relations. To be sure, Jesus’s refusal to join the Zealots—symbolized by Jesus including Romans among those whom he heals—could be used to argue convincingly that attention to compassion for one’s enemy makes impossible even any just war. Jesus is just as idealistic in the story of the rich man who will not give up his wealth to follow Jesus—it is harder for a camel to get through the eye of a needle than for a rich man (who will not give up his wealth to follow God) to enter the Kingdom of God, whose very substance spiritually is epitomized by compassion to one’s enemies, according to the American theologian, Samuel Hopkins. So, Pope Leo was on solid ground in April, 2026 in the midst of the U.S.-Iran War when he emphatically insisted that Jesus would oppose any war—not just any unjust one—but where does that leave the Catholic Church’s just war theory as promulgated by two theological giants, Augustine and Aquinas?
The full essay is at "Religion and Politics."
