Epochs · Epoch 9 of 9

Reversal & Cleansing

2020–2026

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.

Version 1 Revised 2026-05-09 Stability actively-curated Archive copy History all versions
Chronology
2020202020262020 · Second Karabakh War (44-day war)2020 · Azerbaijani capture of Hadrut2020 · Azerbaijani capture of Shusha2020 · Deployment of Russian peacekeepers to Karabakh2020 · Armenian withdrawal from Kelbajar2021 · Milan Tribunal convicts Volonte of corruption2021 · Armenia files ICJ case under ICERD2022 · Azerbaijani gas cutoff to Karabakh (atrocity)2022 · Italy doubles Azerbaijani gas imports after Russian invasion of Ukraine2022 · September 2022 Azerbaijani offensive on Armenia (atrocity)2022 · Prague EPC summit on the border2022 · Lachin Corridor blockade (atrocity)2023 · Azerbaijani military operation, 19–20 September 2023 (atrocity)2023 · Forced displacement of Karabakh Armenians (atrocity)2023 · Azerbaijani oil to Israel during the war on Gaza2024 · Dissolution of the Republic of Artsakh2024 · Withdrawal of Russian peacekeepers from Karabakh2024 · Armenia–Azerbaijan border delimitation: four villages2025 · Washington Joint Declaration (Trump–Aliyev–Pashinyan)2025 · Dissolution of the OSCE Minsk Group2026 · Meloni same-day Yerevan to Baku visit
atrocity event

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 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.

Grouped into year-bands so the period reads as a sequence rather than a wall.

2020–2021 7 events
2020
Second Karabakh War (44-day war)
Forty-four-day war, 27 September – 9 November 2020, in which Azerbaijan retook the seven districts surrounding the former NKAO and the southern third of NKAO itself, including Hadrut and Shusha. Decisive use of Turkish Bayraktar TB2 drones and Israeli loitering munitions against Armenian armour and infrastructure. Ended in a Russian-mediated trilateral statement that placed roughly 2,000 Russian peacekeepers along the residual line of contact and the Lachin Corridor. Approximately 7,000 to 11,000 dead.
war critical casualties 7,000–11,000
2020
Azerbaijani capture of Hadrut
Azerbaijani capture of Hadrut in October 2020, the first major loss of a Soviet-era NKAO locality during the 44-day war. Its fall punctured Armenian assumptions that Azerbaijan would retake only surrounding districts and signalled the operational collapse of the southern front.
battle critical
2020
Azerbaijani capture of Shusha
Azerbaijani capture of Shusha on 8 November 2020 after close-quarters fighting through the mountains. The loss exposed Stepanakert, broke Armenian defensive morale and forced acceptance of the 9 November trilateral ceasefire.
battle critical
2020
Deployment of Russian peacekeepers to Karabakh
Deployment of roughly 1,960 Russian peacekeepers to the Lachin Corridor and residual Armenian-controlled Nagorno-Karabakh after the 9 November 2020 trilateral statement. The mission froze the post-war remnant without resolving status or creating enforceable Armenian security.
military_operation
2020
Armenian withdrawal from Kelbajar
Withdrawal of Armenian forces and settlers from Kelbajar district in November 2020 under the trilateral statement. The handover reversed the 1993 Armenian capture of Kelbajar and displayed the human cost of a victor’s timetable imposed after military defeat.
displacement
2021
Milan Tribunal convicts Volonte of corruption
The Tribunale di Milano sentenced Luca Volonte to 4 years prison and ordered confiscation of EUR 2.39 million as proceeds of the Azerbaijani bribes paid in 2012-14.
ruling
2021
Armenia files ICJ case under ICERD
Armenia’s 16 September 2021 application against Azerbaijan at the International Court of Justice under ICERD, alleging anti-Armenian discrimination, prisoner abuse, incitement and cultural destruction. It opened the main international legal track of the post-2020 conflict.
ruling
2022–2023 8 events
2022
Azerbaijani gas cutoff to Karabakh
March 2022 interruption of the gas pipeline supplying Armenian-controlled Nagorno-Karabakh, leaving roughly 120,000 residents without heating in winter conditions. The episode previewed Azerbaijan’s later use of infrastructure pressure during the Lachin blockade.
blockade
2022
Italy doubles Azerbaijani gas imports after Russian invasion of Ukraine
ENI signed a memorandum with SOCAR in April 2022 to roughly double Azerbaijani gas imports through the TAP pipeline, replacing Russian supply after the invasion of Ukraine.
agreement
2022
September 2022 Azerbaijani offensive on Armenia
Azerbaijani offensive across the internationally recognised Armenia-Azerbaijan border on 13-14 September 2022, striking areas including Jermuk, Vardenis, Goris and Sotk. It shifted the conflict from Karabakh’s status to the security of Armenia’s own sovereign territory.
military_operation critical casualties 200–300
2022
Prague EPC summit on the border
6 October 2022 Prague meeting at which Armenia and Azerbaijan affirmed commitment to the UN Charter and the 1991 Almaty Declaration as the basis for mutual territorial recognition. The statement effectively placed Nagorno-Karabakh inside Azerbaijan’s recognised borders.
declaration
2022–2023
Lachin Corridor blockade
Nine-month blockade of the only road connecting Nagorno-Karabakh to Armenia, 12 December 2022 – 19 September 2023. Began as an "environmental protest" by Azerbaijani-government-organised activists; consolidated in April 2023 with the establishment of an Azerbaijani checkpoint. The [[ruling:icj-order-feb-2023|ICJ ordered three times]] that the corridor be reopened; the orders were ignored. The siege produced acute civilian shortages of food, medicine and fuel, and was the immediate prelude to the September 2023 operation.
blockade critical
2023
Azerbaijani military operation, 19–20 September 2023
Twenty-four-hour Azerbaijani military offensive against the residual Armenian-controlled portion of Nagorno-Karabakh, 19–20 September 2023. The unprepared Karabakh defence forces capitulated within a day. The operation triggered the immediate displacement of effectively the entire Armenian population, over 100,000 people, within the next ten days.
military_operation critical
2023
Forced displacement of Karabakh Armenians
Forced displacement of effectively the entire Armenian population of Nagorno-Karabakh, 24 September – 4 October 2023. UNHCR registered 100,617 forcibly displaced persons in Armenia. By September 2024, only 14 ethnic Armenians remained in the territory. The end of more than two millennia of continuous Armenian habitation in mountainous Karabakh.
displacement critical displaced 100,000–110,000
2023
Azerbaijani oil to Israel during the war on Gaza
During the Israeli war on Gaza launched 7 October 2023, Azerbaijani crude continued to supply Israeli refineries via the BTC pipeline (Ceyhan to Ashkelon), reportedly accounting for approximately 30 to 40 percent of Israeli oil intake.
agreement
2024–2025 5 events
2024
Dissolution of the Republic of Artsakh
Formal dissolution of the Republic of Artsakh/Nagorno-Karabakh Republic effective 1 January 2024, following the September 2023 Azerbaijani operation and mass Armenian exodus. It ended the de facto Armenian state project that began with the 1991 referendum.
declaration critical
2024
Withdrawal of Russian peacekeepers from Karabakh
Withdrawal of Russian peacekeepers from Nagorno-Karabakh beginning in April 2024 and concluding by late June, more than a year before the nominal expiry of their mandate. The withdrawal confirmed that the 2020 peacekeeping architecture had lost its object after the Armenian exodus.
military_operation
2024
Armenia–Azerbaijan border delimitation: four villages
First physical delimitation of the Armenia-Azerbaijan state border in April-May 2024, beginning with four villages in the Tavush/Gazakh sector. The process reduced one source of interstate ambiguity but triggered major Armenian protests over unilateral concession and security exposure.
agreement
2025
Washington Joint Declaration (Trump–Aliyev–Pashinyan)
Trilateral Joint Declaration signed at the White House on 8 August 2025 by the President of the United States, the President of Azerbaijan and the Prime Minister of Armenia. The text initialled the agreed body of an Agreement on the Establishment of Peace and Inter-State Relations between Azerbaijan and Armenia, committed the two parties to seek closure of the [[policy:osce-madrid-basic-principles|OSCE Minsk Process]], and inaugurated a US-mediated connectivity framework for southern Armenia branded the "Trump Route for International Peace and Prosperity" (TRIPP).
declaration critical
2025
Dissolution of the OSCE Minsk Group
OSCE Ministerial Council decision of 1 September 2025, adopted by consensus of all 57 OSCE participating States, closing the OSCE Minsk Process and its related structures (the mandate of the Personal Representative of the Chairperson-in-Office on the conflict, the Minsk Conference framework, and the High-Level Planning Group). Operative closure of all bodies completed by 1 December 2025. Issued in response to the 8 August 2025 Washington Joint Declaration jointly requesting dissolution.
declaration critical
  1. Thomas de Waal, Black Garden: Armenia and Azerbaijan Through Peace and War, 2003
  2. Laurence Broers, Armenia and Azerbaijan: Anatomy of a Rivalry, 2019
  3. International Crisis Group, Reports on Nagorno-Karabakh, 2005
  4. Reuters (compiled), Coverage of the Second Karabakh War (44-day war), 2020
  5. International Court of Justice, Order on Provisional Measures, Armenia v. Azerbaijan, 2023
  6. International Court of Justice, Order on Modification of Provisional Measures, Armenia v. Azerbaijan, 2023
  7. European Parliament, European Parliament resolution on the situation in Nagorno-Karabakh after Azerbaijan's attack and the continuing threats against Armenia, 2023
  8. Genocide Watch, Genocide Emergency: Nagorno-Karabakh, 2023
  9. Luis Moreno Ocampo, Genocide Against Armenians in 2023, 2023
  10. International Committee of the Red Cross, ICRC public statements on Lachin Corridor, December 2022 – September 2023, 2023
  11. International Court of Justice, Order on Provisional Measures (post-September 2023), Armenia v. Azerbaijan, 2023
  12. BBC News (compiled), Coverage of the Karabakh exodus, September–October 2023, 2023
  13. Caucasus Heritage Watch, Monitoring Cultural Heritage in Nagorno-Karabakh, 2023
  14. UN High Commissioner for Refugees, UNHCR registration data, displacement from Nagorno-Karabakh, 2023
  15. International Court of Justice, Application instituting proceedings, Armenia v. Azerbaijan, 2021
  16. International Court of Justice, Order on Provisional Measures, Armenia v. Azerbaijan (December 2021), 2021
  17. Tribunale di Milano, Sezione VII Penale, Milan Tribunal verdict in the Volonte corruption case, 2021
  18. Luigi Ferrarella, Volonte condannato a 4 anni: prese due milioni e 390 mila euro per corrompere il Consiglio d'Europa, 2021
  19. Reuters / Bloomberg (compiled coverage 2022-24), Italy moves to replace Russian gas with Azerbaijani imports, 2022
  20. Politico Europe (compiled coverage), Meloni in Baku: Italy deepens energy partnership with Azerbaijan, 2024
  21. Haaretz / +972 Magazine (compiled coverage 2023-24), How Israel relies on Azerbaijani oil during the war on Gaza, 2024
  22. 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
  23. 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