Armenia is a landlocked country in the geopolitical Transcaucasus (South Caucasus) region, that is located in the Southern Caucasus Mountains and their lowlands between the Black Sea and Caspian Sea, and northeast of the Armenian Highlands. Located in Western Asia, on the Armenian Highlands, it is bordered by Turkey to the west, Georgia to the north, the Lachin corridor which is a part of Lachin District that is under the control of a Russian peacekeeping force and Azerbaijan proper to the east, and Iran and Azerbaijan's exclave of Nakhchivan to the south. Armenia lies between latitudes 38° and 42° N, and meridians 43° and 47° E. It contains two terrestrial ecoregions: Caucasus mixed forests and Eastern Anatolian montane steppe.