Subject
- Military affairs15
- Military operations15
- Rebellions15
- River navigation14
- Second World War (1939-1945)14
- Financial administration13
- Imports13
- Customs administration12
- Exports12
- Legislation12
- Political affairs12
- Russo-Persian War (1826-1828)12
- Bilateral agreements11
- Civil aviation11
- Customs duty11
- Military intelligence11
- Mining11
- State visits11
- Armed forces10
- Ferric oxide10