The divisions between Asia and Europe occur at the Ural Mountains, Ural River, and Caspian Sea in the east, the Caucasus Mountains and the Black Sea, Bosporus Sea of Marmara, Dardanelles and the Aegean Sea in the south. Azerbaijan, Georgia, Greece, Kazakhstan, Russia, and Turkey all have territory in both Asia and Europe. Armenia and Cyprus are entirely in western Asia but are socio-politically European countries and members of the Council of Europe, with Cyprus also being a member of the European Union.