Politics and government 15 Congresses 11 Foreign relations 11 National security 10 Military policy 9 History 6 Security, International 6 Balance of power 4 Deterrence (Strategy) 4 Economic conditions 4 Islam 4 Peace 4 Strategic aspects 4 Strategy 4 Armed Forces 3 Economic policy 3 Environmental aspects 3 International cooperation 3 International relations 3 Pacific Area 3 Arms transfers 2 Asia 2 Forecasting 2 International economic relations 2 Nuclear weapons 2 Pacific Area cooperation 2 Southeast Asia 2 Terrorism 2 World politics 2 20th century. <br> Nuclear warfare 1