In Europe, the dividing line between East and West remained essentially frozen during the next decades. But conflict spread to Asia, Africa, and Latin America. The struggle to overthrow colonial regimes frequently became entangled in Cold War tensions, and the superpowers competed to influence anti-colonial movements.
In 1949, the communists triumphed in the Chinese civil war, and the world's most populous nation joined the Soviet Union as a Cold War adversary. In 1950, North Korea invaded South Korea, and the United Nations and the United States sent troops and military aid. Communist China intervened to support North Korea, and bloody campaigns stretched on for three years until a truce was signed in 1953.