History 5 Biography 3 Foreign relations -- 3 National security -- 3 Politics and government -- 3 Economic policy 2 History - -- 2 more ... History -- 2 Petroleum industry and trade -- 2 Politics and government 2 20th century 1 Armed Forces 1 Case studies 1 Correspondence -- 1 Defenses 1 Description and travel 1 Diplomats -- 1 Economic conditions 1 Economic conditions -- 1 Hnadbooks, manuals, etc 1 Islam and politics -- 1 Islam and state -- 1 Kings and rulers -- 1 Mediation, International -- 1 Military policy 1 Muslim pilgrims and pilgrimages 1 Muslim pilgrims and pilgrimages -- 1 Petroleum products -- 1 Pillars of Islam 1 Politics and governement -- 1 less ...