Subject
- First World War (1914-1918)34
- Diplomacy24
- Treaties18
- Mesopotamian Campaign (1914-1918)16
- Bilateral relations15
- International relations14
- Concessions13
- Boundaries11
- Imperialism11
- Arms traffic10
- Loans10
- Boundary disputes8
- Rebellions8
- Arms control7
- Concessions, red oxide, Abu Musa7
- Foreign relations7
- Frontiers7
- Mining7
- Financial administration6
- Postal services6