The Russia-brokered agreement took effect on November 10 and followed 44 days of fierce fighting over Nagorno-Karabakh, during which the Azerbaijani army routed Armenian forces and wedged deep into the separatist territory. Scores of Armenian civilians were also killed. That conflict left not only Nagorno-Karabakh itself but large chunks of surrounding lands in Armenian hands.
The Defence Ministry in Baku said in a statement on Thursday that "2,783 servicemen of the Azerbaijani armed forces were killed in the patriotic war", adding that 100 more soldiers were missing.
A ceasefire deal was signed by Azerbaijani President Ilham Aliyev, Armenian Prime Minister Nikol Pashinyan and Russian President Vladimir Putin on November 9, in which the three sides agreed on a complete ceasefire in the Nagorno-Karabakh conflict zone starting from November 10.
In fierce fighting that began September 27, the Azerbaijani army routed Armenian forces and pushed deep into the separatist territory.
Russian Federation deployed almost 2,000 peacekeepers for a period of at least five years to monitor the deal and facilitate the return of refugees.
Azerbaijan also called for France to be excluded from mediation after the French Senate voted in favor of recognizing Nagorno-Karabakh's independence, though the French government opposes the non-binding resolution.
Mr Aliyev made the decision as November 10 is Ataturk Memorial Day in Turkey, Azerbaijan's major ally, a statement by the Azerbaijani presidential administration read.
Guterres "urges Armenia and Azerbaijan to resume negotiations under the auspices of the OSCE's Minsk Group co-chairs to reach a lasting peaceful settlement", a statement from the United Nations chief's spokesman said, referring to the Organization for Security and Cooperation in Europe. Several hundred opposition protesters rallied Thursday in the Armenian capital of Yerevan, blocking several streets as they demanded the ouster of Prime Minister Nikol Pashinyan.
Armenia's opposition holds him responsible for failing to negotiate a quicker end to the hostilities at more beneficial terms, but it vows to uphold the peace deal if he steps down. However, Artur Vanetsyan, the former head of the National Security Service who leads the Homeland opposition party, has emphasized that the opposition wasn't pushing for the annulment of the peace deal.