The Stalinist repression in Mongolia had its climax between 1937 and 1939, under the leadership of Khorloogiin Choibalsan, acting under Russian instructions. The purge sought to destroy Mongolian nationalism and because Russia wanted to stop the Buryats’ migration to the Mongolian People’s Republic in the 1930s. All leaders of Mongolia who did not recognise Russian demands to perform purges against Mongolians were executed by the Russians, including Peljidiin Genden and Anandyn Amar. Choibalsan cooperated because of the Soviet threats. In 1952 he suspiciously died in Russia. Comintern leader Bohumír Šmeral said, “The People of Mongolia are not important, the land is important. Mongolia is larger than England, France and Germany”. The purges affected the whole country, although the main focus was on upper party and government ranks, the army, the Buryat ethnic group, patriots, nobles, nationalists, intellectuals, the wealthy and especially the Buddhist clergy.
The total number of people killed during the repression is estimated to be 22,000 to 33,000 people, which is about 3% to 5% of the population. Around the late 1930s the Mongolian People’s Republic had a population of about 700,000 to 900,000 people.