Nagorno-Karabakh

Nagorno-Karabakh is a de facto independent republic located in the South Caucasus, officially part of the Republic of Azerbaijan, about 270 kilometers (170 miles) west of the Azerbaijani capital of Baku, but very close to the border with Armenia.The predominantly Armenian region became a source of dispute between the republics of Armenia and Azerbaijan when both countries gained independence from the Russian Empire in 1918. After the Soviet Union expanded into the South Caucasus, it established the Nagorno-Karabakh Autonomous Oblast (NKAO) within the Azerbaijan SSR in 1923. On December 10 1991, as the Soviet Union was collapsing, a referendum held in the NKAO and the neighboring district of Shahumian resulted in a declaration of independence from Azerbaijan as the Nagorno-Karabakh Republic (NKR), which remains unrecognized by any international organization or country, including Armenia.
See more at Wikipedia.org...