The book "The 1938 Soviet-Japanese Border Conflict at Lake Hassan in Japanese Archives: Facts and Estimates" reveals the events that took place on the border between the Soviet Union and Japan in August 1938. The author presents unique archival documents from the Japanese archive from this period, revealing various aspects of the conflict and the reactions of both sides. The book describes in detail the causes of the conflict, the course of military events on Lake Hassan, the strategic and political consequences of these events. The author analyzes various facts and documents testifying to the confrontation between the Soviet Union and Japan, supplementing them with his own historical assessments. This book is a valuable resource for researching the military history and relations between the Soviet Union and Japan in the interwar period. Focusing on archival documents, she gives the reader an opportunity to better understand the causes and consequences of various conflicts and events of that time.