The U.S. lesson learned from the Vietnam War was that
a. public opinion could be ignored by leaders during wartime.
b. nuclear weapons had utility in a war of insurgency.
c. there were limits on America's ability to get its own way in the world.
d. the national interest of the United States required a total disengagement from Asian affairs.
e. a relentless bombing campaign can force an enemy to concede defeat.
Answer: c