"Secret diplomacy: How far can you go in its elimination?" - the book, written by the famous diplomat and political scientist Paul Samuel Reinsh, draws attention to the current problem of international relations - secret negotiations and agreements, which are often concluded outside of public control. The author examines the history and modernity of secret diplomacy, analyzes its advantages and disadvantages, as well as questions about the limits of its application in the modern world. The book is an important addition to the study of international relations and diplomacy, it stimulates the reader to think about the ethics and effectiveness of secret foreign policy affairs.