sentences:  Tserendorj made up part of his short-lived puppet government that lasted until July 11, 1921 when Mongolian partisans (commanded by Damdin Sükhbaatar) and Red Army units defeated Ungern's forces and recaptured the Mongolian capital.Tserendorj was named Deputy Minister of Foreign Affairs in the newly proclaimed revolutionary government headed by Prime Minister Dogsomyn Bodoo.Following the Russian October Revolution of 1917, and the declaration of the Mongolian People's Republic in 1921, the Kyakhta Treaty became moot.