Speeches, addresses, etc 29 Foreign relations -- 21 Courses -- 19 Economic conditions 17 Closing ceremony 15 Politics and government 15 Global economy 13 more ... Communication 12 Foreign relations 12 Study and teaching 12 Budget -- 11 Farewells 11 Terrorism 10 History 9 Diplomatic training 8 Crisis management 7 Etiquette 7 Terrorism -- 7 Business communication 6 Conflict management 6 Diplomacy -- 6 International trade 6 Management 6 Nuclear weapons 6 Communication -- 5 Diplomacy 5 Economic conditions -- 5 International relations 5 Leadership 5 Military relations -- 5 less ...