State of Buryat-Mongolia

The State of Buryat-Mongolia (Buryat Cyrillic: "Буряад-Монгол улас", Buryat Mongolian script: ᠪᠤᠷᠢᠠᠳ ᠮᠣᠩᠭᠣᠯ ᠪᠤᠯᠤᠰ) was a buffer Buryat-Mongolian state, which existed during the Russian Civil War. It was established according to the decision of the first All-Buryat congress on 25 April 1917. The main government body was Burnatskom, the Buryat National Committee.
After the collapse of the Soviet regime under the advancement of the Whites and the Czechoslovakian division, the State of Buryat-Mongolia was recognized by the Soviets in 1918, and later also by Grigory Semyonov's Government of Transbaikalia. 
The state de facto ceased to exist after the formation of the Far Eastern Republic, which had divided Buryat-Mongolia in two halves: 4 aimags became part of the Far Eastern Republic, while the other 4 formed Buryat-Mongol autonomies of RSFSR.