Depending on where you are, the nearest communist country could be almost any South American nation, Russia, China, Vietnam or Cuba.
China
China, obviously.
China
No, North Korea is a communist nation.
Japan
1949
the nation south of Mongolia is china
cuba china etc .there are different islands with a communist government
1949
Vietnam and Laos. North Korea and China are also communist but are not in South-East Asia.
North Korea is the only nation to border both China and South Korea.