Nagorno-Karabakh, officially the Nagorno-Karabakh Republic (NKR; Lernayin Gharabaghi Hanrapetut'yun), Artsakh Republic or Republic of Artsakh ( Arts'akhi Hanrapetut'yun), is a republic in the South Caucasus recognised only by three non-United Nations (UN) states. Recognised by the UN as part of Azerbaijan, Nagorno-Karabakh controls most of the territory of the former Nagorno-Karabakh Autonomous Oblast and some of the surrounding area, giving it a border with Armenia to the west and Iran to the south.