Foreign relations 170 Diplomatic history 140 World War, 1939-1945 96 History 53 Diplomacy 41 Diplomats 38 Diplomatic negotiations in international disputes 28 Diplomatic and consular service 27 Politics and government 25 International relations 20 World politics 20 Causes 19 World War, 1914-1918 18 Negotiation 11 Peace 11 Diplomatic and consular service, American 10 Foreign relations administration 10 Ambassadors 8 Social aspects 8 Cold War 7 European War, 1914-1918 7 Influence 7 Diplomatic and consular service, British 6 Intervention (International law) 6 Political aspects 6 Sources 6 Diplomatic etiquette 5 Jews 5 Addresses, essays, lectures 4 Conflict management 4