A scholarly debate has emerged over trends in global conflict and the future of warfare. Is the international system becoming more peaceful, or is it just as violent and war‐prone as it always has been? Is great‐power war a thing of the past, or has it merely been dormant under changing technological and institutional conditions? Crafting an appropriate U.S. foreign policy is dependent on accurately measuring the state of war and peace in the world. Please join us for a discussion of these vital issues.