The Russian conquest of the Caucasus mainly occurred between 1800 and 1864. The Russian Empire sought to control the region between the Black Sea and Caspian Sea. South of the mountains was the territory that is modern Armenia, Azerbaijan, Georgia, and parts of Iran and Turkey. North of the mountains was the North Caucasus region of modern Russia. The difficult conquest of the intervening mountains is known as the Caucasian War. Multiple wars were fought against the local rulers of the regions, as well as the dominant powers, the Ottoman Empire and Qajar Iran, for control. By 1864 the last regions were brought under Russian control.