National security -- Foreign relations -- 8 Relations -- 4 Military policy 3 Foreign relations 2 Politics and government -- 2 China 1 more ... Congresses 1 Congresses -- 1 Diplomatic relations 1 Economic conditions -- 1 Energy security 1 History -- 1 Human ecology -- 1 Japan 1 Law and legislation -- 1 Military relations -- 1 National security 1 Rela 1 less ...