History -- International relations World politics -- 4 Human rights 2 Race relations -- 2 Racism -- 2 20th century 1 more ... 20th century -- 1 Communication in politics 1 Communication in politics -- 1 Diplomacy 1 Diplomacy -- 1 Foreign relations -- 1 History 1 International relations -- 1 Low-intensity conflicts (Military science) 1 Merchant marine -- 1 National security -- 1 Naval art and science -- 1 Protracted conflicts (Military science) 1 Terrorism -- 1 Violence -- 1 War -- 1 less ...