<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The Republic of Korea (commonly known as South Korea) and the Democratic People's Republic of Korea (commonly known as North Korea) were simultaneously admitted to the United Nations (UN) in 1991 . On 8 August 1991, the UN Security Council passed United Nations Security Council Resolution 702, recommending both states to the UN General Assembly for membership . On 17 September 1991, the General Assembly admitted both countries under Resolution 46 / 1 . </P> <P> In December 12, 1948, South Korea was officially recognized by the UN General Assembly (UNGA) under Resolution 195 . Since then, South Korea participated in the GA as an observer . In 1950, North Korea invaded South Korea, and the Korean War commenced . The UN Security Council took an action in Korea . </P>

When did north korea join the united nations