Reversal & Cleansing
The 44-day war, the nine-month blockade, and the September 2023 evacuation that emptied Karabakh of its Armenians.
The September-November 2020 war retook the seven Azerbaijani districts and parts of NKAO including Shusha. Russian peacekeepers held the Lachin corridor through 2022; the December 2022 blockade closed it; the September 2023 24-hour Azerbaijani operation collapsed Artsakh; over 100,000 Armenians fled within a week. The Republic of Artsakh dissolved itself on 1 January 2024. The European Parliament called the result ethnic cleansing; the ICJ ordered Azerbaijan three times in 2023 to permit unimpeded movement and protect departure.
The 44-day war
The Second Karabakh War (27 September - 10 November 2020) reversed the 1992-94 Armenian territorial gains. Azerbaijani forces retook the seven surrounding districts (Aghdam, Fuzuli, Jabrayil, Qubadli, Zangilan, Lachin, Kelbajar in stages) and parts of NKAO including the symbolically central Shusha (8 November) and Hadrut. The 10 November 2020 trilateral statement (Aliyev, Pashinyan, Putin) ended active hostilities and deployed Russian peacekeepers to the residual NKAO and to the Lachin corridor.
The nine-month blockade
The Lachin Corridor blockade began on 12 December 2022, ostensibly as an "environmental protest" by Azerbaijani state-aligned eco-activists but functionally a closure. The March 2022 gas cutoff and the September 2022 Azerbaijani incursion into Armenia proper preceded it. The ICJ February 2023 order, the July 2023 reaffirmation and the November 2023 supplemental order required Azerbaijan to permit unimpeded movement, then to ensure protection of departing Armenians. All three were ignored. The ICRC reported severe shortages of food, medicine and fuel from late 2022; former ICC Chief Prosecutor Luis Moreno Ocampo's August 2023 legal opinion concluded the blockade satisfied Article II(c) of the 1948 Genocide Convention.
The 24-hour operation
On 19-20 September 2023 Azerbaijan launched a 24-hour military operation across NKAO. The Republic of Artsakh capitulated within hours. From 24 September through early October, more than 100,000 of the approximately 120,000 Armenian inhabitants fled south through the Lachin corridor toward Armenia. The UNHCR registered 100,617 forcibly displaced persons in 11 days. By September 2024, only an estimated 14 ethnic Armenians remained.
Dissolution
The Republic of Artsakh dissolved itself on 1 January 2024. Stepanakert was renamed Khankendi by Azerbaijani authorities and made the seat of Aliyev's post-2024 Karabakh administration. The Russian peacekeepers withdrew in April 2024. The Azerbaijani "Great Return" programme placed approximately 8,500 Azerbaijani settlers across the former NKAO, Lachin, Shusha, Hadrut and Agdam through 2024.
The legal characterisation
The European Parliament resolution of 5 October 2023 used "ethnic cleansing" by 491 votes to 9. The ICJ orders established the international-humanitarian-law framing of unlawful blockade and forcible-transfer protection. No international court has ruled on genocide; mainstream academic characterisation (Crisis Group, Cox-Eibner, Genocide Watch's alert) describes ethnic cleansing with elements of genocidal intent in the prosecutorial sense. The atlas treats the legal characterisation as settled around forced displacement and contested at the genocide threshold; the 2023 events dispute handles the framing in detail.
The remaining open questions
The Zangezur corridor demand (Aliyev, Prague summit 2022; multiple post-2023 statements) continues. The April 2024 border delimitation returned four villages to Azerbaijan from northern Tavush. The April 2025 peace treaty draft, signed in Yerevan and Baku in 2026, remains in implementation. The diaspora policy of Karabakh-Armenian return is unresolved and effectively foreclosed by the post-2024 Azerbaijani state position.
What the period sets
The territorial question is settled by force. The legal questions of accountability for the blockade, the operation and the displacement remain open. The "Western Azerbaijan" frame applied to the Republic of Armenia, prefigured in the 1988-91 expulsion narrative, is now official Azerbaijani-state discourse. The Armenian state position post-2023 is that recognition of the genocide of 1915, accountability for 2023, and a stable border, in that order, are the conditions of normalisation. The atlas's position is that these positions are not symmetric and the historical record is not symmetric, but the documentation must be.
Events of the period
Grouped into year-bands so the period reads as a sequence rather than a wall.
Further reading
- Thomas de Waal, Black Garden: Armenia and Azerbaijan Through Peace and War, 2003
- Laurence Broers, Armenia and Azerbaijan: Anatomy of a Rivalry, 2019
- International Crisis Group, Reports on Nagorno-Karabakh, 2005
- Reuters (compiled), Coverage of the Second Karabakh War (44-day war), 2020
- International Court of Justice, Order on Provisional Measures, Armenia v. Azerbaijan, 2023
- International Court of Justice, Order on Modification of Provisional Measures, Armenia v. Azerbaijan, 2023
- European Parliament, European Parliament resolution on the situation in Nagorno-Karabakh after Azerbaijan's attack and the continuing threats against Armenia, 2023
- Genocide Watch, Genocide Emergency: Nagorno-Karabakh, 2023
- Luis Moreno Ocampo, Genocide Against Armenians in 2023, 2023
- International Committee of the Red Cross, ICRC public statements on Lachin Corridor, December 2022 – September 2023, 2023
- International Court of Justice, Order on Provisional Measures (post-September 2023), Armenia v. Azerbaijan, 2023
- BBC News (compiled), Coverage of the Karabakh exodus, September–October 2023, 2023
- Caucasus Heritage Watch, Monitoring Cultural Heritage in Nagorno-Karabakh, 2023
- UN High Commissioner for Refugees, UNHCR registration data, displacement from Nagorno-Karabakh, 2023
- International Court of Justice, Application instituting proceedings, Armenia v. Azerbaijan, 2021
- International Court of Justice, Order on Provisional Measures, Armenia v. Azerbaijan (December 2021), 2021
- Tribunale di Milano, Sezione VII Penale, Milan Tribunal verdict in the Volonte corruption case, 2021
- Luigi Ferrarella, Volonte condannato a 4 anni: prese due milioni e 390 mila euro per corrompere il Consiglio d'Europa, 2021
- Reuters / Bloomberg (compiled coverage 2022-24), Italy moves to replace Russian gas with Azerbaijani imports, 2022
- Politico Europe (compiled coverage), Meloni in Baku: Italy deepens energy partnership with Azerbaijan, 2024
- Haaretz / +972 Magazine (compiled coverage 2023-24), How Israel relies on Azerbaijani oil during the war on Gaza, 2024
- Donald J. Trump (United States); Ilham Aliyev (Azerbaijan); Nikol Pashinyan (Armenia), Joint Declaration by the President of the Republic of Azerbaijan, the Prime Minister of the Republic of Armenia and the President of the United States of America, Washington D.C., 8 August 2025, 2025
- OSCE Ministerial Council (57 participating States, by consensus), OSCE Ministerial Council Decision on the closure of the OSCE Minsk Process and related structures, 1 September 2025, 2025