- Capital: Sanaa
- Population: 33.322.000
- Surface: 527.970 km2
- Devise: le riyal yéménite
- Religion: Majorité Islam
- Appartient à: Ligue arabe, FMI, ONU
- Capital: Moroni
- Population: 921.000
- Surface: 1.861 km2
- Devise: le franc comorien
- Religion: Majorité Islam
- Appartient à: ACP, Ligue arabe, FMI, ONU, UA