Located to the west of Manchuria (Manchukuo), north of China and Russia to the north. Prewar, this area was also known as "Outer Mongolia". Mongolia was the second Communist country in the world, known as the People's Republic of Mongolia. Aligned with Russia, Mongolia had a role at the start and end of the Second World War.
During May to September 1939, a border dispute known as the Battle of Khalkhin Gol / Nomonhan Incident happened between the Japanese and Manchukuoans versus Mongolian and Russians.
During August 1945 "August Storm" Soviet-Mongolian forces
attacked the Japanese Army in Manchuria (Manchukuo). After
the war, Stalin handed Southern Mongolia
to China according to the Yalta treaty.
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September 20, 2017