"Diplomacy in pursuit of peace and security faces severe challenges not seen in decades. Obstacles to diplomacy are coming from the re-emergence of strong states, discord in the UN Security Council, destabilizing transnational non-state actors, closing space for civil society within states, and the weakening of the international liberal order. Diplomacy and the Future of World Order develops three visions of the future in which states and other key actors in the international system respond by deciding to go it alone, return to a liberal order, or collaborate on a case-by-case basis to address common threats and problems. The central focus of this book is peace and conflict diplomacy, defined as the effort to manage others' conflicts, cope with great power competition, or deal with threats to the state system itself. The distinguished international group of experts writing in this volume analyze the different scenarios' impact on peace and conflict diplomacy from the perspective of key actors and regions. It also explores the prospects for discord or collaboration around four major security issues-peacekeeping, nuclear nonproliferation, cyber competition, and terrorism. Chester A. Crocker, Fen Osler Hampson, and Pamela Aall conclude by identifying emerging types of diplomacy that can provide the foundation for global peacemaking and conflict management in an uncertain future"--