Since the 1990s, when previously classified and top secret Russian archival documents on the Korean War became open and accessible, it has become clear for post-communist countries that Kim Il Sung, Stalin and Mao Zedong were the primary organizers of the war. It is now equally certain that tensions arising from Soviet and American struggle generated the origins of the Korean War, namely the Soviet Union’s occupation of the northern half of the Korean peninsula and the United States’ occupation of the southern half to the 38th parallel after 1945 as well as the emerging bipolar world order of international relations and Cold War. Newly available Russian archival documents produced much in the way of new energies and opportunities for international study and research into the Korean War.2 However, within this research few documents connected to Mongolia have so far been found, and little specific research has yet been done regarding why and how Mongolia participated in the Korean War. At the same time, it is becoming today more evident that both Soviet guidance and U.S. information reports (evaluated and unevaluated) regarding Mongolia were far different from the situation and developments of that period. New examples of this tendency are documents declassified in the early 2000s and released
publicly from the American Central Intelligence Agency (CIA) in December 2016 which contain inaccurate information. The original, uncorrupted sources about why, how and to what degree the Mongolian People’s Republic (MPR) became a participant in the Korean War are in fact in documents held within the Mongolian Central Archives of Foreign Affairs. These archives contain multiple documents in relation to North Korea. Prior to the 1990s Mongolian scholars Dr. B. Lkhamsuren,3 Dr. B. Ligden,4 Dr. Sh. Sandag,5 junior scholar J. Sukhee,6 and A. A. Osipov7 mention briefly in their writings the history of relations between the MPR and the DPRK during the Korean War. Since the 1990s the Korean War has also briefly been touched upon in the writings of B. Lkhamsuren,8 D. Ulambayar (the author of this paper),9 Ts. Batbayar,10 J. Battur,11 K. Demberel,12 Balảzs Szalontai,13 Sergey Radchenko14 and Li Narangoa.15 There have also been significant collections of documents about the two countries and a collection of memoirs published in 200716 and 2008.17 The author intends within this paper to discuss particularly about why, how and to what degree Mongolia participated in the Korean War, the rumors and realities of the war and its consequences for the MPR’s membership in the United Nations. The MPR was the second socialist country following the Soviet Union (the Union of the Soviet Socialist Republics) to recognize the DPRK (Democratic People’s Republic of Korea) and establish diplomatic ties. That was part of the initial stage of socialist system formation comprising the Soviet Union, nations in Eastern Europe, the MPR, the PRC (People’s Republic of China) and the DPRK. Accordingly between the MPR and the DPRK fraternal friendship and a framework of cooperation based on the principles of proletarian and socialist internationalism had been developed.18 In light of and as part of this framework, The Korean War has left its deep traces in the history of the MPR’s external diplomatic environment and state sovereignty
China's policies toward the Soviet Union and the United States before and in the Korean War