What was the US trying to do in Europe and Japan during the Cold War?

Japan learned three main lessons from the Gulf War. First was that the post-Cold War era would not be free of the types of armed conflict that can draw many nations into war. The second lesson was that as the United Nations plays a larger role in peacekeeping, Japan must assume a more prominent role in that body.

Explanation:

the tallest building in the western hemisphere and the sixth tallest building in the world