Second Karabakh War (44-day war) §

Background

The frozen settlement that emerged from the 1994 Bishkek ceasefire left Armenia in control of roughly 14% of internationally recognised Azerbaijani territory, the former NKAO plus seven adjacent districts (Aghdam, Fuzuli, Jabrayil, Qubadli, Zangilan, Kelbajar and Lachin) constituting the so-called "occupied territories." The OSCE Minsk Group co-chaired by Russia, France and the United States produced the so-called Madrid Principles in 2007, but no settlement was ratified, and Azerbaijani patience under Ilham Aliyev declined steadily through the 2010s as the country's hydrocarbon revenues funded a sustained military build-up.

The Four-Day War of April 2016 was a tactical preview: Azerbaijan recovered small but symbolic territory and demonstrated tactical drone capability. The July 2020 Tavush clashes across the recognised Armenia–Azerbaijan border further raised the temperature; the death of an Azerbaijani major-general triggered the largest pro-war demonstrations Baku had seen.

By September 2020 Azerbaijan had completed military preparation for an offensive: a strategic alliance with Turkey formalised through joint exercises in summer 2020; the integration of Turkish Bayraktar TB2 drone systems and operating personnel; the deployment of Syrian Sunni mercenaries through Turkish channels (documented by Reuters, the Guardian, and French-government statements); and a substantial inventory of Israeli Harop loitering munitions, Spike anti-tank missiles, and LORA ballistic missiles. Armenian preparation was, in Broers's assessment, "scarcely existent", the Armenian forces had not adapted to drone warfare, electronic warfare capability was minimal, and the air defence inventory consisted largely of Soviet-vintage S-300 systems whose locations were known.

The event

Hostilities began at 06:00 on 27 September 2020 with Azerbaijani artillery preparation and ground assault on multiple sectors. The war divided into three phases.

Phase one (27 September – 18 October): the southern push

Azerbaijani forces broke through Armenian fortified positions in the Aras valley and advanced rapidly through Jabrayil. The capture of Hadrut (9–15 October) was the symbolic break point: it was the first NKAO district, not one of the seven surrounding occupied territories, to fall. Drone footage of TB2 strikes on Armenian armour was distributed through Azerbaijani state media in real time; the psychological effect on the Armenian population, in Yerevan and in Karabakh, was profound editorial.

Phase two (19 October – 7 November): the Aras advance

Azerbaijani forces moved up the Iranian border through Zangilan and Qubadli, cutting the southern Armenian line of communication and opening the road to Stepanakert from the south. Multiple ceasefires brokered by Russia, France and the United States collapsed within hours of declaration. Armenian counter-attacks, including OTR-21 ballistic-missile strikes on Ganja, which killed civilians and were widely condemned, failed to break the Azerbaijani advance.

Phase three (8–9 November): Shusha

Azerbaijani special forces took Shusha in eight days of close-quarters mountain fighting. With Stepanakert under direct artillery fire from Shusha and Armenian forces collapsing along the southern front, Yerevan capitulated. Prime Minister Nikol Pashinyan, in a 02:30 broadcast on 10 November (Armenian time), announced acceptance of the Russian-brokered statement.

Casualties

Best contemporaneous estimates: 4,000–5,000 Armenian military and 200 Armenian civilian dead; 2,800 Azerbaijani military and 80 Azerbaijani civilian dead; approximately 90,000 Armenians displaced from the lost territories; uncounted Syrian mercenary dead. Several hundred Armenian POWs were taken; some were killed in custody, as documented by extensive video evidence circulated through Azerbaijani Telegram channels and subsequently the subject of provisional-measures orders from the ICJ.

Aftermath

The trilateral statement of 9 November 2020 (the trilateral statement) provided for: (i) Armenian withdrawal from the seven surrounding districts on a phased timetable through 1 December; (ii) deployment of approximately 1,960 Russian peacekeepers from the 15th Motor Rifle Brigade along the residual line of contact and the Lachin Corridor for a five-year mandate; (iii) the opening of "all economic and transport links," including a corridor through southern Armenia connecting Azerbaijan with Nakhichevan (the Zangezur Corridor question). The terms were framed in Baku as a victor's settlement and in Yerevan as a national catastrophe; both characterisations are accurate.

The political consequences in Armenia were severe but did not topple Pashinyan, who won the snap election of June 2021 against Robert Kocharyan on a platform of post-war pragmatism. In Azerbaijan the war confirmed Aliyev's domestic position; victory parades through November and December were the largest state-organised events in the country's history.

The war did not, however, settle the conflict. The residual ~120,000 Armenians of NKR survived under the Russian peacekeeping umbrella for two further years until the Lachin blockade from December 2022 and the September 2023 operation forced their displacement.

Memory and politics

The 2020 war is widely regarded as the first war decided by drone editorial; it has been studied closely by Western and non-Western militaries for its lessons on cheap air superiority. Broers's monograph, written before the 2023 events, remains the standard Western academic reference.

The war reset Armenian politics around the question of how, if at all, to coexist with the post-2020 settlement. The Pashinyan government's gradual acceptance of Soviet-era borders as the basis for delimitation (the Prague summit of October 2022) and its 2023 acquiescence in the loss of NKR are continuations of the trajectory established at the trilateral statement. Whether that trajectory leads to a sustainable peace, or only to further attritional concessions, is the central political question facing Armenia editorial.