Azerbaijan, officially the Republic of Azerbaijan, is a country in the South Caucasus region of Eurasia at the crossroads of Eastern Europe and Western Asia. It is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west and Iran to the south. The exclave of Nakhchivan is bounded by Armenia to the north and east, Iran to the south and west, and has an 11 km long border with Turkey in the northwest.
The Azerbaijan Democratic Republic proclaimed its independence in 1918 and became the first secular democratic Muslim-majority state. In 1920 the country was incorporated into the Soviet Union as the Azerbaijan Soviet Socialist Republic. The modern Republic of Azerbaijan proclaimed its independence on 30 August 1991, shortly before the dissolution of the USSR in the same year. In September 1991, the Armenian majority of the disputed Nagorno-Karabakh region seceded to form the Republic of Artsakh. The region and seven adjacent districts outside it became de facto independent with the end of the Nagorno-Karabakh War in 1994.