Subject
- Customs administration[remove]14
- Foreign relations7
- Military affairs6
- Border disputes5
- Bilateral relations2
- Financial administration2
- Accounts1
- Arms control1
- Concessions1
- First World War (1914-1918)1
- Frontiers1
- General Treaty with the Arab Tribes of the Persian Gulf (1820)1
- Harbours1
- Police1
- Political activists1
- Prisoners1
- Propaganda1
- Repatriation1
- Smuggling1
- Sovereignty1