The 2024 U.S. presidential election is likely to hinge on two very different basic approaches to domestic and foreign policy, two very different sets of underlying premises, and two very different types of presidential and high-level official personalities at the administrative helm putting them into effect. This volume comparatively analyzes the choices of presidential doctrine that are likely to foreshadow alternatives concerning the principles, beliefs, and nature of U.S. foreign policy in the years following the election.