The following is list of the official reactions to the Second Nagorno-Karabakh War.

OSCE Minsk Group On 2 October 2020, the OSCE Minsk Group, responsible for mediating the peace process in the Nagorno-Karabakh conflict since 1992, condemned the fighting and called on those involved in the conflict to respect their obligations to protect civilians. The Minsk Group stated that participation by "external parties" was working against the peace process. The group called for an immediate ceasefire, and "substantive negotiations, in good faith and without preconditions".

Supranational and regional organizations

President of the European Council Charles Michel called for a bilateral cessation of hostilities, as did the Organization for Security and Co-operation in Europe (OSCE) on 1 October and 5 October 2020, and Secretary-General of the United Nations António Guterres followed by the United Nations Security Council (UNSC). Following a closed council meeting, the Security Council issued a statement. It condemned the use of force and reiterated the Secretary-General's call to immediately cease fighting, deescalate tensions and return to meaningful negotiations. It further expressed concern at "large scale military actions", regret at the death toll and impact on civilian populations, and complete support for the "central role" of the OSCE, urging both sides to cooperate towards an urgent return of dialogue without setting preconditions. On 18 October 2020, the UN Secretary-General again called on Armenia and Azerbaijan to respect the humanitarian truce and condemned attacks on civilians. Similarly, Secretary General of NATO, Jens Stoltenberg, expressed deep concern for the escalation of hostilities and called for the sides to immediately halt fighting and progress towards a peaceful resolution, urging NATO-member Turkey to use its influence to that end. Stoltenberg expressed NATO's neutrality and said that both "Armenia and Azerbaijan have been valued NATO partners for more than 25 years". NATO and the European Union (EU) have refused to publicly criticize Turkey's involvement in the conflict.

Secretary General of the Organization of American States Luis Almagro demanded that Azerbaijan cease hostilities, whereas the Turkic Council demanded an unconditional withdrawal of Armenia from the occupied territories of Azerbaijan, and adding that Turkic world have stood by "brotherly Azerbaijan". The Organisation of Islamic Cooperation initially condemned Armenian "provocations" and subsequently expressed concern regarding Armenia's violations of the 10 October 2020 humanitarian ceasefire and conditional solidarity with the Republic of Azerbaijan, highlighting the OIC stance and that of the UNSC and urging a political solution to the conflict, and affirming respect for Azerbaijan's sovereignty, territorial integrity, and internationally recognized borders.

On 19 October 2020, at the request of Russia, the United States, and France, the United Nations Security Council held closed consultations on the situation in Nagorno-Karabakh. After discussions, a draft declaration was prepared on behalf of the President of the Security Council. The draft declaration did not contain a reference to the previous UN Security Council resolutions regarding the topic. According to Hikmat Hajiyev, this project was mainly prepared by Russia and France. However, non-permanent members of the Security Council, who are the members of the Non-Aligned Movement at the same time, twice violated the silence procedure, insisting on the inclusion in the statement of a reference to the UN Security Council resolutions. Following the persistent and principled position of the member states of the Non-Aligned Movement, the draft statement in question was formally withdrawn. President of Azerbaijan Ilham Aliyev, who is also the Chairman of Non-Aligned Movement thanked those states including Indonesia, Niger, Tunisia, Vietnam, South Africa, Saint Vincent and the Grenadines, and the Dominican Republic for their fair position, announcing that he will continue to defend the interests of the member states, international law, and justice in the UN and other international organizations.

In its concluding observations on its periodic review of Azerbaijan, the United Nations Committee on the Elimination of Racial Discrimination expressed deep concern regarding "severe and grave human rights violations committed during 2020 hostilities and beyond by the Azerbaijani military forces against prisoners of war and other protected persons of Armenian ethnic or national origin, including extrajudicial killings, torture and other ill-treatment and arbitrary detention as well as the destruction of houses, schools, and other civilian facilities."

Countries The Russian Federation Being a co-chair of OSCE Minsk Group, Russia's key role in this conflict is that of an active mediator. On 2 October 2020, along with the other two co-chairs of the Group, France and the U.S., it called for immediate cessation of hostilities in Nagorno-Karabakh, and asked both sides to continue negotiations without preconditions. On 6 October 2020, the Russian Foreign Minister Sergei Lavrov and his Iranian counterpart Mohammad Javad Zarif expressed concern about the involvement of Syrian and Libyan fighters in the Nagorno-Karabakh conflict, with the possible support of Turkey. Both Russia and Armenia are part of a mutual defence pact. However, on 8 October 2020, President Vladimir Putin explained that since the fighting is not happening on the territory of Armenia therefore Russia would not ibe in a position to intervene in the current conflict. He also affirmed Russia's good relations with both Armenia and Azerbaijan. On 9 October 2020, Lavrov mediated a ceasefire after 10 hours of talks between Armenian and Azerbaijani Foreign Ministers in Moscow. The ceasefire was quickly broken. On 22 October 2020, Putin indicated that the root cause of the conflict lies in interethnic clashes between Armenians and Azerbaijanis in the 1980s, and specifically referred to the pogrom of Armenians in Sumgait.

Turkey

The government of Turkey expressed support for Azerbaijan. Turkey blamed Armenia for violating the ceasefire and Turkish President Recep Tayyip Erdoğan initially urged Azerbaijan to persist with its campaign until it had retaken all territory lost in the First Nagorno-Karabakh War. Erdogan criticized the failed activities of the OSCE Minsk Group in the last 25 years as "stalling tactics" preventing a diplomatic solution. Further, Turkey issued a statement on 1 October 2020 dismissing the joint demands from France, Russia, and the United States calling for a ceasefire. Northern Cyprus, a self-declared state recognized only by Turkey, expressed support for Azerbaijan.

Turkey accused Canada of a "double standard" in freezing military exports to Turkey but not Saudi Arabia, which is involved in military intervention in Yemen.

United States On 27 September 2020, United States president Donald Trump said his administration was "looking at [the conflict] very strongly" and that it was seeing whether it could stop it. Presidential candidate and former Vice President Joe Biden demanded that Turkey "stay out" of the Nagorno-Karabakh conflict.Laura Kelly, Biden says Turkey must stay out of Azerbaijan-Armenia conflict The Hill 29 September 2020 In a letter to U.S. Secretary of State Mike Pompeo, Senate Foreign Relations Committee ranking member Bob Menendez, Senate Minority Leader Chuck Schumer, and several other lawmakers called for the Trump administration to immediately suspend U.S. military aid to Azerbaijan, sent through Pentagon's "building partner assistance program". Eliot Engel, chairman of the House Foreign Affairs Committee, called the influence of third party actors like Turkey "troubling". On 15 October 2020, Pompeo urged both sides to respect the humanitarian ceasefire and stated, "We now have the Turks, who have stepped in and provided resources to Azerbaijan, increasing the risk, increasing the firepower that's taking place in this historic fight... The resolution of that conflict ought to be done through negotiation and peaceful discussions, not through armed conflict, and certainly not with third party countries coming in to lend their firepower to what is already a powder keg of a situation". A number of U.S. congressmen were more vocal in their criticism of the Azerbaijani side. On 22 October 2020, Representative Frank Pallone said he would introduce a bipartisan resolution with the backing of several dozen colleagues that "support[s] the Republic of Artsakh, recognizing its right to self-determination, and condemning Azerbaijan and Turkey for aggression".Pallone to Introduce Bipartisan Resolution Supporting Artsakh's Right to Self-Determination 22 October 2020 At least one congressman, Brad Sherman, called for the imposition of sanctions against Azerbaijan through the Magnitsky Act.

On 23 October 2020, President Trump stated that "good progress" was being made on reaching an agreement in the conflict, saying: "We are talking about this; we are talking with Armenia. We have very good relations with Armenia. They're great people and we're going to help them". On 25 October 2020, U.S. National Security Advisor Robert C. O'Brien announced that Armenia has accepted a ceasefire, Azerbaijan has not yet but they are "pushing them to do so". Later that day it was announced that both sides had agreed with a humanitarian ceasefire from the next day morning.

The Armenian ambassador to the United States, Varuzhan Nersesyan, had invited United States intervention in the conflict, as had his Azerbaijani counterpart Elin Suleymanov.

Others

Syrian President Bashar al-Assad blamed Turkey for the conflict, while Greek foreign minister Nikos Dendias, on a visit to Yerevan on 16 October 2020, said that it was critical to end foreign interference, warning that Turkey's intervention was raising serious international concerns.

Israeli President Reuven Rivlin expressed sorrow at the resumption of violence and loss of life, stating that Israel's long-standing cooperation and relations with Azerbaijan was not for offensive purposes, adding that Israel was interested in promoting relations with Armenia and was prepared to offer humanitarian aid. However, Nikol Pashinyan heavily criticized Israel for selling arms to Azerbaijan and its allies saying that they are working with "mercenaries and terrorists", who are targeting a peaceful population. Armenia recalled its ambassador to Israel for consultations. Prime Minister Nikol Pashinyan also rejected the humanitarian aid proposed by Israel and stated that the country should send that aid to the "terrorists". Israeli Defence Minister Benny Gantz accused Turkey of disrupting peace efforts in the region and called for international pressure on Turkey to dissuade "direct terrorism". Israel declined to comment on the possibility of halting support for Azerbaijan.

Hungary stated that it backed Azerbaijan's territorial integrity, adding it supports the reduction of tensions in the escalating conflict and a negotiated OSCE Minsk Group solution.

President of Ukraine Volodymyr Zelenskyy stated that Ukraine supports Azerbaijan's territorial integrity, would not provide military assistance to either state, and wanted to avoid an ethnic conflict between its own Armenian and Azerbaijani communities.

Pakistan supported Azerbaijan's position, stating that peace between both parties depended on the implementation of UN Security Council resolutions concerning the conflict and a withdrawal of Armenian forces from Azerbaijani-claimed territories.