Tannu Uriankhai
The part Buryat Mongol Transbaikalian Cossack Ataman Grigory Semyonov declared a "Great Mongol State" in 1918 and had designs to unify the Oirat Mongol lands, portions of Xinjiang, Transbaikal, Inner Mongolia, Outer Mongolia, Tannu Uriankhai, Khovd, Hu-lun-pei-erh and Tibet into one Mongolian state.