Focusing primarily on politics and foreign policy, America at War Since 1945 analyzes America's involvement in three wars since the end of World War II: Korea, Vietnam, and the Gulf War. The main questions asked are: How did the U.S. become involved in these wars? How were the wars conducted? And how did the U.S. get out of these wars? In Korea and Vietnam, the U.S. fought to show the world that it would stand up to the evils of communism; that it could be counted on (with money, advisors, or even a major military effort if necessary) to halt the advance of communism. But in both wars, the U.S. showed itself to be militarily vulnerable. The Gulf War--against tyranny, not communism--restored the U.S. to its position of prominence in the world, reaffirming its role as a world leader and a defender of freedom.