Leadership 19 Foreign relations 9 Politics and government 9 Addresses, essays, lectures 7 History 7 Biography 6 English language 5 Grammar 5 Case studies 4 Management 4 National security 4 Communication in management 3 Conflict management 3 Decision making 3 Elite (Social sciences) 3 Executive ability 3 Handbooks, manuals, etc 3 Military policy 3 Psychological aspects 3 Soldiers 3 Armed Forces 2 Balance of power 2 Congresses 2 East Asia 2 Ethnic relations 2 Forecasting 2 International relations 2 International status 2 Organizational effectiveness 2 Personnel management 2