Foreign relations -- 19 National security -- 7 Foreign economic relations -- 5 Relations -- 4 Foreign relations 3 History 3 Sea-power -- 3 more ... Communication and culture -- 2 Congresses 2 Congresses -- 2 Intercultural communication 2 Marine resources -- 2 Military relations -- 2 Nationalism -- 2 Social life and customs 2 Strategic aspects -- 2 Chinese -- 1 Civilization 1 Colonies -- 1 Commerce -- 1 Defenses 1 Defenses -- 1 Economic policy -- 1 Handbooks, manual, etc 1 Handbooks, manual, etc -- 1 Handbooks, manual, etc. -- 1 History -- 1 International relations 1 Marketing -- 1 Military policy 1 less ...