Nagorno-Karabakh is a landlocked region in the South Caucasus, lying between Lower Karabakh and Zangezur and covering the southeastern range of the Lesser Caucasus mountains. The region is mostly mountainous and forested and has an area of .
Most of the region is governed by the Nagorno-Karabakh Republic, an unrecognized, de facto independent state established on the basis of the Nagorno-Karabakh Autonomous Oblast within the Azerbaijan SSR of the Soviet Union. The territory is internationally recognized as part of Azerbaijan, although it has not exercised power over most of the region since 1991. Since the end of the Nagorno-Karabakh War in 1994, representatives of the governments of Armenia and Azerbaijan have been holding peace talks mediated by the OSCE Minsk Group on the region's status.