The Korean War and The Damage Korean War was one of the by-products of Cold War, the global political and diplomatic struggle between the Communist and non-Communist systems following World War II. Korean War, military struggle fought on t June 1950 to July 1953. Begun as a war between South Korea (Republic of Korea) and North Korea (Democratic people¡¯s Republic of Korea), the conflict swiftly developed into a limited international war involving the Unites States and 19 other nations. Specifically, the Korean War, excluding its early, solely national stage, resulted from so-called police action undertaken by the United Nations against Communist aggression.