History 120 Congresses 92 Politics and government 89 Social conditions 64 Social aspects 50 War and society 50 Islam 45 Economic conditions 37 Information society 31 Civil society 24 Sociology, Military 21 Economic aspects 20 Foreign relations 20 Metals 18 Military art and science 18 International relations 17 Management 17 War 17 Economic policy 16 Terrorism 16 Handbooks, manuals, etc 15 History, Military 14 Case studies 13 Secret societies 13 Societies, etc 13 Armed Forces 12 Information technology 12 Social change 12 Vision 2020 12 Civilization 11