Foreign relations -- 25 Politics and government 19 Politics and government -- 16 Congresses 10 History -- 10 Economic conditions 9 Social conditions 7 more ... Congresses -- 6 History 6 Defenses 5 Economic policy 5 Foreign relations 5 Jewish-Arab relations 5 World politics -- 5 Economic conditions -- 4 International economic relations 4 Petroleum industry and trade -- 4 Zionism 4 Arms control -- 3 Civilization 3 Commerce 3 Commercial policy 3 Disarmament -- 3 International cooperation 3 International organization 3 Addresses, essays, lectures -- 2 Biography -- 2 Chinese -- 2 Civilization -- 2 Commerce -- 2 less ...