This collection examines the theory, practice, and application of state neutrality in international relations. With a focus on its modern-day applications, the studies in this volume analyze the global implications of permanent neutrality for Taiwan, Russia, Ukraine, the European Union, and the United States. Exploring permanent neutrality's role as a realist security model capable of rivaling collective security, the authors argue that permanent neutrality has the potential to decrease major security dilemmas on the global stage.