Overview The conflict was characterised by the widespread use of
combat drones, particularly by Azerbaijan, as well as
heavy artillery barrages,
rocket attacks and
trench warfare. Throughout the campaign, Azerbaijan relied heavily on
drone strikes against Armenian/Artsakh forces, inflicting heavy losses upon Armenian tanks, artillery, air defence systems and military personnel, although some Azerbaijani drones were shot down. It also featured the deployment of
cluster munitions, which are
banned by the majority of the international community but not by Armenia or Azerbaijan. Both Armenia and Azerbaijan used cluster munitions against civilian areas outside of the conflict zone. A
series of missile attacks on
Ganja, Azerbaijan inflicted mass civilian casualties, as did
artillery strikes on
Stepanakert, Artsakh's capital. Much of Stepanakert's population fled during the course of the fighting. The conflict was accompanied by coordinated attempts to spread misleading content and
disinformation via
social media and the internet. The conflict began with an Azerbaijani ground offensive that included armoured formations, supported by artillery and drones, including
loitering munitions. Armenian and Artsakh troops were forced back from their first line of defence in Artsakh's southeast and northern regions, but inflicted significant losses on Azerbaijani armoured formations with anti-tank guided missiles and artillery, destroying dozens of vehicles. Azerbaijan made heavy use of drones in strikes against Armenian air defences, taking out 13 short-range surface-to-air missile systems. Azerbaijani forces used drones to systematically isolate and destroy Armenian/Artsakh positions. Reconnaissance drones would locate a military position on the front lines and the placement of reserve forces, after which the position would be shelled along with roads and bridges that could potentially be used by the reserves to reach the position. After the Armenian/Artsakh position had been extensively shelled and cut off from reinforcement, the Azerbaijanis would move in superior forces to overwhelm it. This tactic was repeatedly used to gradually overrun Armenian and Artsakh positions. Azerbaijani troops managed to make limited gains in the south in the first three days of the conflict. For the next three days, both sides largely exchanged fire from fixed positions. In the north, Armenian/Artsakh forces counterattacked, managing to retake some ground. Their largest counterattack took place on the fourth day, but incurred heavy losses when their armour and artillery units were exposed to Azerbaijani attack drones, loitering munitions, and reconnaissance drones spotting for Azerbaijani artillery as they manoeuvred in the open. Azerbaijan targeted infrastructure throughout Artsakh starting on the first day of the war, including
the use of rocket artillery and cluster munitions against Stepanakert, the capital of Artsakh, and a missile strike against a bridge in the
Lachin Corridor linking Armenia with Artsakh. On the 6th day of the war, Armenia/Artsakh targeted
Ganja for the
first of four times with ballistic missiles, nominally targeting the military portion of
Ganja International Airport but instead hitting residential areas. On the morning of the seventh day, Azerbaijan launched a major offensive. The Azerbaijani Army's First, Second, and Third Army Corps, reinforced by reservists from the Fourth Army Corps, began an advance in the north, making some territorial gains, but the Azerbaijani advance stalled. Artsakh authorities began mobilising civilians. Just before 04:00 (00:00
UTC) on 10 October 2020, Russia reported that both Armenia and Azerbaijan had agreed on a humanitarian ceasefire after ten hours of talks in Moscow (the Moscow Statement) and announced that both would enter "substantive" talks. After the declared ceasefire, the President of Artsakh admitted Azerbaijan had been able to achieve some success, moving the front deep into Artsakh territory; the Armenian Prime Minister announced that Armenian forces had conducted a "partial retreat". The ceasefire quickly broke down and the Azerbaijani advance continued. Within days Azerbaijan announced the capture of dozens of villages on the southern front. A second ceasefire attempt midnight 17 October 2020 was also ignored. Azerbaijan announced the capture of Jabrayil on 9 October 2020 and Füzuli on 17 October 2020. Azerbaijani troops also captured the
Khoda Afarin Dam and
Khodaafarin Bridges. Azerbaijan announced that the border area with Iran was fully secured with the capture of Agbend on 22 October 2020. Azerbaijani forces then turned northwest,
advancing towards the Lachin corridor, the sole highway between Armenia and Nagorno-Karabakh, putting it within artillery range. According to Artsakh, a counterattack repelled forward elements of the Azerbaijani force and pushed them back. Armenian/Artsakh resistance had managed to halt the Azerbaijani advance to within 25 kilometres of the Lachin corridor by 26 October 2020. Artsakh troops who had retreated into the mountains and forests began launching small-unit attacks against exposed Azerbaijani infantry and armour, and Armenian forces launched a counteroffensive near the far southwestern border between Armenia and Azerbaijan. On 26 October 2020, a US-brokered ceasefire came into effect, but fighting resumed within minutes. Three days later, the Artsakh authorities stated that the Azerbaijani forces were from
Shusha. On 8 November 2020, Azerbaijani forces
seized Shusha, the second-largest city in Artsakh before the war, located 15 kilometres from
Stepanakert, the republic's capital. Although the amount of territory contested was relatively restricted, the conflict impacted the wider region, in part due to the type of munitions deployed. Shells and rockets landed in
East Azerbaijan Province,
Iran, although no damage was reported, and Iran reported that several unmanned aerial vehicles (UAVs) had been downed or had crashed within its territory. Georgia stated that two UAVs had crashed in its
Kakheti Province.
Ceasefire agreement On 9 November 2020, in the aftermath of the capture of Shusha, a ceasefire agreement was signed by the President of Azerbaijan, Ilham Aliyev, the Prime Minister of Armenia, Nikol Pashinyan, and the President of Russia, Vladimir Putin, ending all hostilities in the zone of the Nagorno-Karabakh conflict from 10 November 2020, 00:00 Moscow time. Under the terms of the deal, both belligerent parties were to exchange prisoners of war and the bodies of the fallen. Furthermore, Armenian forces were to withdraw from Armenian-occupied territories surrounding Nagorno-Karabakh by 1 December 2020, while a peacekeeping force, provided by the
Russian Ground Forces and led by Lieutenant General
Rustam Muradov, of just under 2,000 soldiers would be deployed for a minimum of five years along the line of contact and the Lachin corridor linking Armenia and the Nagorno-Karabakh region. Additionally, Armenia undertook to "guarantee safety" of transport communication between Azerbaijan's
Nakhchivan exclave and mainland Azerbaijan in both directions, while Russia's
border troops (under the
Federal Security Service) were to "exercise control over the transport communication". On 15 December 2020, after several weeks of cease fire, the sides finally exchanged prisoners of war. 44 Armenian and 12 Azeri prisoners were exchanged. It is unclear whether more prisoners remain in captivity on either side.
Territorial changes At the time of the ceasefire, Azerbaijan had retaken most of the area south of the Lachin corridor. It had also captured one-third of Nagorno-Karabakh, mostly in the south. Under the terms of the ceasefire, Azerbaijan regained control over much of its territory that had been lost to Armenia in the earlier war. In total, Azerbaijan regained control of 72% of the disputed territory, including the territory captured in Nagorno-Karabakh. It was reported that Azerbaijan regained control of 5 cities, 4 towns, 286 villages.
Non-military actions taken by Armenia and Azerbaijan Since the beginning of the conflict, both Armenia and Azerbaijan declared
martial law, limiting the
freedom of speech. Meanwhile, a new law came into effect since October 2020 in Armenia, which prohibits negative coverage of the situation at the front. Restrictions have been reported on the work of international journalists in Azerbaijan, with no corresponding restrictions reported in Nagorno-Karabakh.
Armenia ,
Yerevan, on 7 October 2020. On 28 September 2020, Armenia banned men aged over 18 listed in the mobilisation reserve from leaving the country. The next day, it postponed the trial of former President
Robert Kocharyan and other former officials charged in the 2008 post-election unrest case, owing to one of the defendants, the former Defence Minister of Armenia,
Seyran Ohanyan, going to Artsakh during the conflict. On 1 October 2020, the
Armenian National Security Service (NSS) stated that it had arrested and charged a former high-ranking Armenian military official with treason on suspicion of spying for Azerbaijan. Three days later, the NSS stated that it had arrested several foreign citizens on suspicion of spying. Protesting Israeli
arms sales to Azerbaijan, Armenia
recalled its ambassador to Israel. On 8 October 2020, the
Armenian President,
Armen Sarkissian, dismissed the director of the NSS. Subsequently, the Armenian government toughened the martial law and prohibited criticising state bodies and "propaganda aimed at disruption of the defense capacity of the country". On the same day, the Armenian MoD cancelled
a Novaya Gazeta correspondent's journalistic accreditation, officially for entering Nagorno-Karabakh without accreditation. On 9 October 2020, Armenia tightened its security legislation. The following day, the
Armenian parliament passed a law to write off the debts of the Armenian servicemen wounded during the clashes and the debts of the families of those killed. On 27 October 2020, the Armenian president Armen Sarkissian dismissed the head of the counterintelligence department of the National Security Service, Major General Hovhannes Karumyan and the chief of staff of the border troops of the National Security Service Gagik Tevosyan. On 8 November 2020, Sarkissian yet again dismissed the interim head of the National Security Service. As of 8 November 2020, one Armenian activist was fined by the police for his anti-war post.
Azerbaijan in Jafar Jabbarly Square near the
28 May station in
Baku on 10 October 2020. On 27 September 2020, Azerbaijani authorities restricted internet access shortly after the clashes began, stating it was "in order to prevent large-scale Armenian provocations." The government made a noticeable push to use
Twitter, which was the only unblocked platform in the country. Despite the restrictions, some Azerbaijanis still used
VPNs to bypass them. The
National Assembly of Azerbaijan declared a curfew in
Baku,
Ganja,
Goygol,
Yevlakh and a number of districts from midnight on 28 September 2020, under the Interior Minister,
Vilayet Eyvazov.
Azerbaijan Airlines announced that all airports in Azerbaijan would be closed to regular passenger flights until 30 September 2020. The Military Prosecutor's Offices of Fuzuli, Tartar, Karabakh and Ganja began criminal investigations of war and other crimes. Also on 28 September 2020, the President of Azerbaijan, Ilham Aliyev, issued a decree authorising a partial mobilisation in Azerbaijan. On 8 October 2020, Azerbaijan recalled its ambassador to Greece for consultations, following allegations of
Armenians from Greece arriving in Nagorno-Karabakh to fight against Azerbaijan. Three days later, the
Azerbaijani State Security Service (SSS) warned against a potential Armenian-backed terror attack. On 17 October 2020, the Azerbaijani MoFA stated that member of the
Russian State Duma from the ruling
United Russia,
Vitaly Milonov, was declared
persona non grata in
Azerbaijan for visiting Nagorno-Karabakh without permission from the Azerbaijani government. On 24 October 2020, by recommendation of the
Central Bank of Azerbaijan, the member banks of the Azerbaijani Banks' Association unanimously adopted a decision to write off the debts of the military servicemen and civilians who died during the conflict. On 29 October 2020, the President of Azerbaijan, Ilham Aliyev, issued a decree on the formation of temporary commandant's offices in the areas that the Azerbaijani forces seized control of during the conflict. According to the decree, the commandants will be appointed by the
Ministry of Internal Affairs, but they will have to coordinate with other executive bodies of the government, including
Ministry of Defense, the
State Border Service, the
State Security Service, and
ANAMA. Over the course of the war several Azerbaijani activists were brought in for questioning by the State Security Service, due to their anti-war activism. On 12 December, a decree by President Aliyev lifted the curfew that had been imposed in September. == Casualties ==