What lessons could we draw today from the Korean and Vietnam Wars?

TOPIC:What lessons could we draw today from the Korean and Vietnam Wars? And have we? Explain, drawing on your knowledge of the causes of the two wars, the United Nations’ role, and the difference in the way the two wars were fought by the military forces of both sides.

*This is for U.S History.
*several paragraphs to 2 pages.
(intro/ several mains/conclusion)