UN Goals Change

Now, however, the objective of the war changed. In June 1950, the independence of South Korea had been at stake. But back in 1948, the United Nations had wanted to oversee elections to unite the country. In September 1950, the UN desire to unify Korea reemerged.
The goal was strongly supported by the United States as well. Through their friends in the United Nations, the Chinese communists
issued a public warning to the United States against an American advance north of the 38th parallel. The UN secretary general. Trygve Lie, however, believed that the United States had no choice but to act on behalf of the United Nations' intention to unify Korea. Lie therefore declared that the United Nations had "no alternative to an advance north of the 38th parallel." On October 7, the United Nations General Assembly adopted an American- sponsored resolution stating that it wished to see "a unified, independent, democratic Korea be established."