National security -- 19 Foreign relations -- 10 Foreign relations 7 Relations -- 5 Military policy 3 National security 3 Defenses 2 more ... Government policy -- 2 History -- 2 National Security 2 Nuclear weapons -- 2 Plutonium -- 2 China 1 Congresses 1 Congresses -- 1 Diplomatic relations 1 Economic conditions -- 1 Energy security 1 Human ecology -- 1 Internal security -- 1 Japan 1 Law and legislation -- 1 Military relations -- 1 National security strategy -- 1 Nuclear non-proliferation 1 Nuclear nonproliferation 1 Politics and government -- 1 Rela 1 less ...