What was the first Hot war of the Cold War

The first "hot war" of the Cold War era was fought in which of the following countries? Korea.

Explanation:

Korean War - First "hot war" of the Cold war. The Korean War began in 1950 when the Soviet-backed North Koreans invaded South Korea before meeting a counter-offensive by UN Forces, dominated by the United States. The war ended in stalemate in 1953.