Friedrich von Bernhardi, Germany and the Next War, history homework help

To what extent did the second world war settle the issues that created animosity and violence between nation-states from 1919-1945? In what ways, did the outcome of the second world war leave certain issues unresolved? 

 Friedrich von Bernhardi, Germany and the Next War, 1911

 Woodrow Wilson, Fourteen Points, 1918

 Treaty of Versailles, 1919

 John Maynard Keynes, Economic Consequences of the Peace, 1920

 Ōkuma Shigenobu, Illusions of the White Race, 1921

 Josef Stalin, Speech on Agrarian Policy, 1929

 Adolf Hitler, Proclamation to the German People, 1933

 Adolf Hitler, Nuremberg Laws, 1935

 Benito Mussolini, The Doctrine of Fascism, 1932

 Nagai Ryūtarō, Some Questions for President Roosevelt, 1939

 George F. Kennan: The Sources of Soviet Conduct, 1947

 Walter Lippman, The Cold War, 1946

 Nikolai Novikov, Telegram to Soviet Leadership, 1946 

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 Harry S. Truman, Truman Doctrine, 1947

 UN, Declaration of Human Rights, 1948