<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2012) (Learn how and when to remove this template message) </Td> </Tr> <P> 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 . </P> <P> The Korean War was the first war in which the United Nations (UN) participated . Some commentators argued that it showed that the UN was a powerful organization for helping to keep world peace . The UN Command in South Korea is still functional . </P>

18. what was a lasting effect of the korean war