Korean reunification (Korean: 통일, also called 남북통일 (in the South, literally South-North Reunification), 북남통일 (in the North, literally North–South Reunification) and 조국통일 (usually in the North, literally Homeland Reunification) refers to the hypothetical future reunification of the Democratic People's Republic of Korea (better known as North Korea) and the Republic of Korea (better known as South Korea) under a single government. The process towards this was started by the June 15th North–South Joint Declaration in August 2000, where the two countries agreed to work towards a peaceful reunification in the future.
However, there are a number of difficulties in this process due to the large political and economic differences between the two countries and other state actors such as China, Russia, Japan, and the United States. Short-term problems, such as potentially large numbers of refugees migrating from North Korea and initial economic and political instability, and long-term problems, such as cultural differences and possible discrimination, would need to be resolved.
Read more about Korean Reunification: Division, Post-Korean War, Current Status, Politics and Ideology, Implications