Diplomacy: Theory and Practice by G. R. Berridge offers a comprehensive exploration of the art of negotiating international agreements and the channels through which such activities occur in both diplomatic and non-diplomatic contexts. Fully revised and updated, this fifth edition delves into the intricacies of state relations, providing readers with a deep understanding of how diplomacy functions. New to this edition are chapters dedicated to secret intelligence and economic and commercial diplomacy, enriching the reader’s insight into various facets of international negotiations. With 312 pages of detailed content, this book serves as an essential resource for students, scholars, and practitioners in the field of international relations.