History of Korea
After the end of WWII in 1945, the Allies divided the country into a northern area (protected by the Soviets) and a southern area protected (primarily by the United States). In 1948, when the powers failed to agree on the formation of a single government, this partition became the modern states of North and South Korea. The peninsula was divided at the 38th Parallel: the "Republic of Korea" was created in the south, with the backing of the US and Western Europe, and the "Democratic People's Republic of Korea" in the north, with the backing of the Soviets and the communist People's Republic of China. The new premier of North Korea, Kim il-Sung, launched the Korean War in 1950 in an attempt to reunify the country under Communist rule. After immense material and human destruction, the conflict ended with a cease-fire in 1953. The two nations officially remain at war because a peace treaty was never signed. In 1991, both states were accepted into the United Nations.
Korean nationalist historiography
The surrender of Japan at the end of World War II handed Korea its independence, but the peninsula was immediately divided into ideologically opposed regimes in North and South Korea. At first, Marxist historians focusing on class analysis dominated historical writing in the north, whereas Syngman Rhee's staunchly anti-Communist government (1948–1960) also made the notion of "minjok" less central to historiography in the south. In North Korea class analysis was displaced by nationalist analysis in the 1950s, soon after the Korean War. In South Korea, the fall of the Rhee regime in 1960 and the anti-Japan protests triggered by the normalization of diplomatic ties with Japan in 1965 also reinstated the "minjok" as a "unifying framework" for developing an anti-colonial historiography. Since then, historical studies in both North and South have displayed a "pervasive and intense nationalistic tone" despite ideological differences between the two countries. This shared historical outlook has served as a backdrop to North Korea–South Korea relations, as in June 2000 when both Korean heads of state stated that Korean unification was a historical imperative.