The Republic of Korea (more commonly known as South Korea) and the Democratic People's Republic of Korea (more 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.
In 1948, the Republic of Korea was officially recognized by the UN General Assembly. 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.
Coming with change of recognition in 1971 of the Chinese seat, North Korea gained observer status. North Korea has never held a seat on the UN Security Council.
South Korea has twice been elected to a non-permanent seat of the UN Security Council, first in the 1995 election for 1996–97 and again in the 2012 election for 2013–14. In 2001, Han Seung-soo of South Korea held the presidency of the General Assembly. In 2007, Ban Ki-moon from South Korea was elected as the Secretary-General of the United Nations. He was re-elected in 2011.