Subject
- Diplomacy73
- Treaties53
- Bilateral relations40
- First World War (1914-1918)38
- Concessions29
- International relations25
- Boundaries24
- Foreign relations24
- Imperialism22
- Sovereignty19
- Arms traffic17
- Frontiers17
- Mesopotamian Campaign (1914-1918)17
- Military occupation16
- Boundary disputes15
- Loans14
- Military operations14
- Rebellions14
- River navigation14
- Railways13