The ongoing hostilities started on September 27, becoming one of the most serious in a series of border clashes that have been occurring in the region on a fairly regular basis. The parties are fighting over Nagorno-Karabakh, a mountainous region located inside Azerbaijan, as recognised internationally, and some surrounding territories.
Baku claims sovereignty over these, based on borders set during the Soviet era, and asserts that they have been occupied by Armenia. Yerevan supports the predominantly-Armenian population of Nagorno-Karabakh in their bid for independence, for which they fought a bloody war against Azerbaijan in the 1990s.
Age-old seeds of tension
Nagorno-Karabakh is among those places in the world where there is no historically correct evidence on whose claim is stronger. It was always too distant and difficult to control for any particular power to become dominant in ethnicity or religion. Armenians and Azeris have been living there in a patchwork of settlements, with old grudges held across generations.
The Russian Empire absorbed the region in the early 19th century after a war with Iran, but its goals were limited to preventing growing Armenian and Azeri nationalism from boiling over. After the Bolshevik revolution in the beginning of the 20th century, a full-fledged war started. The Soviets got involved with their own agenda to retake control of the region, and supported the territorial claim of the Azeris. The reason was largely down to the Bolshevik’s desire for Turkey to eventually embrace communism. The Turks and Armenians were sworn enemies and Joseph Stalin feared upsetting Constantinople, the then capital, by giving Yerevan land desired by Baku. Thus, Nagorno-Karabakh ended up as an autonomous region of Soviet Azerbaijan.
Post-Soviet bloodshed
The disintegration of the USSR then led to a repetition of the same scenario. In 1988, the authorities of Nagorno-Karabakh, which remained predominantly Armenian in ethnic makeup, despite Azeri administration, petitioned Moscow to have their land transferred to Armenia.
After this was rejected, tensions mounted, escalating into a full-fledged war in 1991. Fought between independent Azerbaijan and the self-proclaimed Nagorno-Karabakh Republic, backed by Armenia, it lasted until May 1994 and claimed an estimated 15,000 to 25,000 lives on both sides, also forcing hundreds of thousands to flee.
The truce signed then – with Russia’s mediation – left Nagorno-Karabakh in control of most of the territory it held as a part of Azerbaijan, plus large swathes of land connecting it to Armenia and Iran, and a small portion on the Azeri side.