Politics and government -- National security -- 8 Politics and government 8 Economic conditions -- 5 Biography -- 2 Congresses 2 Congresses -- 2 more ... Economic conditions 2 Heads of state -- 2 Relations -- 2 Balance of power 1 Defenses 1 Environmental aspects 1 Environmental monitoring 1 Executive advisory bodies -- 1 Foreign countries 1 Foreign economic relations -- 1 Foreign relations -- 1 International relations -- 1 Power-plant -- 1 Psychological aspects 1 Security, International 1 World politics -- 1 less ...