- Capital: Sanaa
- Population: 33.322.000
- Surface: 527.970 km2
- Devise: le riyal yéménite
- Religion: Majorité Islam
- Appartient à: Ligue arabe, FMI, ONU
- Capital: Damas
- Population: 21.324.367
- Surface: 185.180 km2
- Devise: la livre syrienne
- Religion: Majorité Islam
- Appartient à: Ligue arabe, FMI, ONU