The current main building of the Russian State Social University passed through a long and interesting history. Starting from the 1920s there was a headquarters of International Academy for the Trade-Union Movement, where were built-up the members of Communist Parties from different countries, where these activities were banned. The Communist International (Comintern) settled in the same building from 1938 till 1943. During that time there were working such important players of the International Movement as Georgi Dimitrov, Dmitri Manuilsky, Moris Torez, Dolores Ibarruri, Klement Gottwald, Palmiro Togliatti, Otto Kuusinen, Walter Ulbricht, and others. From 1943, with the demands of the historical period, in the building was located the Soviet Information Bureau, sort of a fusion between the KGB, the Ministry of Foreign Affairs and the Soviet Counterintelligence. There were prepared a lot of acknowledged operations against Nazi Intelligence Office, data processing etc.