United Nations -- 53 Armed Forces 51 Foreign relations -- 45 Security, International 44 History -- 33 History 29 Armed Forces -- 25 more ... Foreign relations 25 United Nations 25 World politics -- 22 Human rights 19 International relations 19 Politics and government 19 International law 15 International cooperation 14 Peace 13 Politics and government -- 12 Peacekeeping forces -- 11 Peacemaking -- 11 Security council 11 Armed forces -- 10 Congresses 10 International agencies 10 International organization 10 Arms control -- 9 China 9 International police 9 International relations -- 9 Intervention (International Law) 9 Periodicals 9 less ...