Human Conflict Project

All events · Borders by Force Again

2023 Azerbaijani Offensive and Exodus of Karabakh Armenians

2023 · Balkans, Anatolia & the Caucasus

Displacement Territory Seized
Displaced
100,617
over 100,600 ethnic Armenians (an estimated 99% or more of Nagorno-Karabakh's population) fled to Armenia between 24 September and 3 October 2023
Share of the population affected
84%
of the Armenian population of Nagorno-Karabakh immediately before the September 2023 offensive, 2023
Killed
200–700
conflict deaths incl. combatants
Territory
2,900 km²
The remaining Armenian-held core of Nagorno-Karabakh, brought under full Azerbaijani control; the Republic of Artsakh formally dissolved on 1 January 2024

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What happened

After a roughly nine-month blockade of the Lachin corridor (the sole route between Armenia and Nagorno-Karabakh) that the International Court of Justice ordered Azerbaijan to lift in February 2023, Azerbaijan launched a rapid military offensive on 19-20 September 2023 that led to the surrender of Karabakh Armenian forces. Within about ten days, over 100,600 ethnic Armenians, well over 99% of the enclave's population, fled to Armenia, and the unrecognized Republic of Artsakh dissolved itself on 1 January 2024. A fuel depot explosion during the exodus killed over 200 people, and dozens more died during the journey.

Parties

Azerbaijan launched a rapid military offensive on 19-20 September 2023 after a nine-month blockade of the Lachin corridor, leading to the surrender and dissolution of the unrecognized Republic of Artsakh and the flight of nearly its entire population

Disputed

The European Parliament, Council of Europe and several governments have characterized the exodus as ethnic cleansing, and some individuals and organizations (including a former ICC prosecutor) have alleged genocide; Azerbaijan denies these characterizations, states the departure was voluntary, and points to its offer of reintegration guarantees that Armenians did not trust given prior conduct.

The denominator

The de facto authorities claimed about 120,000 residents and their 2015 census gave 145,053; independent observers and journalists during the 2022-23 blockade put the figure nearer 100,000-120,000, and Azerbaijan disputed the higher counts. The Armenian government registered 100,617 arrivals from Karabakh by early October 2023, effectively the entire remaining population.

The territory was emptied, so the share approaches 100 per cent whichever end of the contested population range is used; the residual difference reflects uncertainty about the pre-offensive population, not people who stayed.

Where the baseline comes from

On the death toll

A Karabakh emergency-services official, Hunan Tadevosian, told RFE/RL that more than 200 Karabakh soldiers and about two dozen civilians were killed in the 19-20 September 2023 offensive, and that at least 220 died in the 25 September Berkadzor fuel-depot explosion during the exodus, with about 150 bodies burned beyond recognition and 50 people missing; Azerbaijan reported 192 of its own servicemen killed. The low end counts only Armenian military and civilian deaths in the offensive itself; the high end adds the fuel-depot disaster (a non-combat explosion at a distribution point during the flight) and Azerbaijani military losses. Armenian sources fold the depot deaths into the toll of the operation; Azerbaijan treats them as an accident unconnected to its 'anti-terror measures'.

Documented forms of violence

Starvation and Siege

The nine-month restriction of the Lachin Corridor and the resulting shortages of food, fuel and medicine in Nagorno-Karabakh were the subject of the ICJ's 22 February 2023 provisional measures order requiring Azerbaijan to ensure unimpeded movement along the corridor; Azerbaijan denies having imposed a blockade.

Formal findings

Movements mapped

Countries touched, on present-day borders

Azerbaijan, Armenia

Sources

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