In this chapter I apply the Augustinian Liberal just war framework to contemporary cases of war and conflict: Iraq, Afghanistan, terrorism, Syria, North Korea, and selected cases of cyberwar and autonomous weapons. I discuss Iraq because it is the largest recent war and has animated a huge amount of commentary from just war scholars. I contrast my approach with that of several other thinkers to show the original insights of my approach. Second, I discuss Afghanistan and the War on Terror because the wars illustrate some features of the moral reality of contemporary war that I hope shape our understanding of just war in the future. Third, I use Syria to discuss humanitarian crises, the use of weapons of mass destruction, and the costs of nonintervention. Fourth, I use North Korea to discuss nuclear war, nuclear deterrence, and preemptive and preventive war – issues that have been with us since the dawn of the Cold War and are still with us. Fifth, I discuss cyberwar and autonomous weapons as novel forms of conflict whose moral dimensions are still coming into focus.