The clashes occurred in a region that is disputed between the self-proclaimed Republic of Artsakh and the Republic of Azerbaijan. The region includes the former Soviet Nagorno-Karabakh Autonomous Oblast and the surrounding districts of Azerbaijan under the control of Armenian forces at the time. Azerbaijan claimed to have started a military operation to prevent purported continuous Armenian shelling of civilian areas in Azerbaijan.[29] However, there was no evidence of Armenian shelling. Until the 2020 Nagorno-Karabakh war, the clashes were the worst since the 1994 ceasefire agreement signed by Artsakh, Azerbaijan and Armenia.[30]
A ceasefire was reached on 5 April between Azerbaijan and Armenia in Moscow. The Nagorno-Karabakh authorities also welcomed the oral agreement.[31][32] After the agreement, both sides accused each other of violations. Azerbaijan claimed to have regained 20 km2 (7.7 sq mi) of land,[33] while Armenian officials suggested a loss of 8 km2 (3.1 sq mi) of land of no strategic importance.[34][35] However, the International Crisis Group reported that those heights were of strategic importance.[36]
Officially, Baku reported the loss of 31 servicemen without publishing their names. Armenian sources claimed much higher numbers varying between 300 and 500.[37] The Ministry of Defence of Armenia reported the names of 92 military and civilian casualties, in total.[38] The US State Department estimated that a total of 350 people, both military and civilian, had died.[39] Official sources of the warring parties put those estimates either much higher or much lower, depending on the source.
^"President Serzh Sargsyan invited a meeting of the National Security Council". president.am. Office to the President of Armenia. 12 April 2016. Archived from the original on 5 August 2020. Retrieved 5 August 2020. ....It was noted that during the military actions unleashed by Azerbaijan, the RA Armed Forces fulfilled their task. The NKR Defence Army was victorious in thwarting Azerbaijani aggression and frustrating its plans.
^Simão, Licínia (June 2016), The Nagorno-Karabakh redux(PDF), European Union Institute for Security Studies, p. 2, doi:10.2815/58373, ISBN9789291984022, ISSN2315-1129, archived(PDF) from the original on 21 March 2018, retrieved 31 March 2018, For the first time since the 1990s, Azerbaijani forces managed to regain control of small parts of the territory surrounding Karabakh – the first time the Line of Contact has shifted. Although these changes do not significantly alter the parties' military predicament on the ground...
^Cite error: The named reference georgiatoday.ge was invoked but never defined (see the help page).
^"Armenia: Divided Within?". Al Jazeera. 27 October 2016. Archived from the original on 15 November 2016. Retrieved 15 November 2016. ...the territories lost during the April war were of no tactical or strategic importance...
^"Nagorno-Karabakh's Gathering War Clouds". International Crisis Group. 1 June 2017. Archived from the original on 5 August 2020. Retrieved 5 August 2020. Although Azerbaijan gained control of only two strategic heights in the conflict zone, that was enough to restore its people's confidence in their army...
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).