After War: European Reconciliation and Tolerance

What's missing in America? What is the historical wisdom nurtured by Europe, which has experienced wars and revolutions? Now ask the world politics. What kind of era are we going to now? When the Cold War was over, everyone thought that peace would finally come. However, in reality, terrorism and ethnic wars are taking place all over the world. Isn't there something missing in America, the world leader? What is the wisdom of reconciliation and tolerance that Europe has nurtured in its profound history?