Subject
- Diplomacy207
- First World War (1914-1918)50
- Treaties44
- Frontiers42
- Bilateral relations40
- Military intelligence37
- International relations35
- Military operations34
- Reports33
- Trade (practice)26
- Military affairs23
- Armed forces21
- Foreign relations21
- Loans21
- Railways19
- Internal politics18
- Imports17
- Mesopotamian Campaign (1914-1918)17
- Roads17
- Second World War (1939-1945)17