Most historians agree that the Mongolian revolution of 1921 was initiated by Soviet Russia and was imposed on the Mongols, who were nothing more than their passive tools. This must be at least partly due to the fact that so far, works on this subject have almost exclusively been based on materials of Russian and Chinese origin. Materials published in the Mongolian People's Republic, however, provide ample evidence that the Mongolian revolution originated in a purely Mongolian situation, though the Mongols could never have succeeded in their revolution without Soviet support.