Foreign relations World War, 1939-1945 30 Diplomatic history 19 History 15 Politics and government 12 World politics 9 Causes 7 National socialism 6 Addresses, essays, lectures 3 Campaigns 3 Public opinion 3 Relations 3 World War, 1914-1918 3 African Americans 2 Diplomatic and consular service 2 Foreign economic relations 2 Foreign public opinion 2 Holocaust, Jewish (1939-1945) 2 Influence 2 Jews 2 Military policy 2 National security 2 Persecutions 2 Political and social views 2 Psychology 2 Sources 2 Alliances 1 Anti-Nazi movement 1 Atomic bomb 1 Atrocities 1