- Capital: Muscat
- Population: 4,527,000
- Surface Area: 309,500 km2
- Currency: Omani Rials (1 EUR=0.4289 OMR)
- Religion: Mostly Islam
- Belongs to: ACD, Arab League, GCC, IMF, UN
- Capital: Djibouti City
- Population: 1,002,000
- Surface Area: 23,200 km2
- Currency: Francs
- Religion: Mostly Islam
- Belongs to: ACP, Arab League, IGAD, IMF, UN, AU