Government policy -- Terrorism -- 13 Foreign relations -- 7 Prevention -- 7 Politics and government -- 5 History -- 4 National security -- 4 more ... Nuclear weapons -- 3 War on terrorism, 2001- 3 Case studies 2 Nuclear arms control -- 2 Petroleum industry and trade -- 2 Prevention. -- 2 Administrative agencies -- 1 Arms transfers -- 1 Biography -- 1 Case studies -- 1 Civil defense -- 1 Civil rights -- 1 Cold War -- 1 Computer networks -- 1 Computer security -- 1 Counterinsurgency -- 1 Cross- cultural studies 1 Cyber intelligence (Computer security) -- 1 Defenses 1 Democracy -- 1 Economic aspects -- 1 Economic sanctions, American 1 Emergency management -- 1 less ...