This authoritative reference brings together contributions from leading scholars and practitioners to explore both the enduring principles and the radical changes shaping modern diplomacy. The Handbook examines how the context, tools, actors, and domains of diplomacy have transformed alongside the changing nature of the state and the world order. It delves into the increasing interplay between traditional “club diplomacy”—characterized by a small, hierarchical group of state actors—and “network diplomacy,” which is more inclusive, transparent, and involves a diverse array of non-state participants such as civil society organizations.

Chapters cover a wide range of topics, from the foundations of diplomatic law to the challenges posed by new technologies, public diplomacy, and global governance structures. The editors and contributors analyze how states and diplomats are adapting to a landscape where information moves faster, crises are more complex, and power is more diffuse. The book also addresses the frustrations and constraints diplomats face as they navigate these changes, offering insight into both the continuity and innovation at the heart of the profession.

The Handbook stands out for its global perspective, drawing on examples and case studies from around the world. It provides not just a snapshot of current diplomatic practice, but also a forward-looking discussion of where the profession is headed. This makes it an essential resource for students, scholars, and practitioners seeking to understand both the theory and real-world application of modern diplomacy