Defenses Foreign relations -- 3 National security -- 3 Military policy 2 Military relations -- 2 Prevention -- 2 Terrorism -- 2 more ... Weapons of mass destruction 2 Asymmetric warfare -- 1 Civil defense -- 1 Conflict management -- 1 Economic conditions - 1989- 1 Emergency management -- 1 Foreign relations 1 Government policy -- 1 Military assistance, American -- 1 Nuclear terrorism 1 Nuclear weapons -- 1 Politics and government -- 1 Security, International 1 Strategic aspects 1 less ...