This publication of documents from the Archive of the President of the Russian Federation occupies a special place among the documentary publications that have appeared in recent years, which touch upon Soviet-German relations between the First and Second World Wars. A significant layer of archival materials of paramount importance was introduced into scientific circulation throughout the spectrum of relations between the Soviet state and Germany in the 1920s and 1930s, covering not only political, diplomatic, economic, scientific, cultural relations between the Soviet and German states, but also international problems in Europe and in other parts of the world. For historians, political scientists.