A collection of articles by Russian and foreign historians is devoted to topical problems of the history of the First World War and the Versailles-Washington system of international relations. It is based on the materials of speeches at the Third International Scientific Conference “World War I, the Versailles system and modernity”, held on October 11-12, 2013 .. in g. Pushkin . It was organized by the Ministry of Culture of the Russian Federation, the Russian Military Historical Society, the Russian Association of Historians of the First World War, St. Petersburg State University, the Institute of General History of the Russian Academy of Sciences .. The collection introduces into scientific circulation a wide range of materials of domestic and foreign archives . The book is intended for students of humanitarian universities, professional historians, specialists in the field of international relations, as well as a wide readership interested in the First World War and the Versailles-Washington system of international relations.