The aftermath of the Korean War set the tone for Cold War tension between all the superpowers. The Korean War was important in the development of the Cold War, as it showed that the two superpowers, United States and Soviet Union, could fight a "limited war" in a third country. The "limited war" or "proxy war" strategy was a feature of conflicts such as the Vietnam War and the Soviet War in Afghanistan, as well as Angola, Greece, and wars in the Middle East.