Armenian and Azerbaijani, located in the Caucasus, broke out a large-scale military conflict in the Nagorno Karabakh region in the early morning of July 27. The two sides used artillery, tanks and other heavy weapons to fire at each other across the actual control line, leading to the escalation of border tension. The conflict has caused a large number of casualties. In response to the grim situation, Armenian government announced on the 27th that martial law and general mobilization would be implemented throughout the country. On the same day, Azerbaijan also declared a state of war and imposed martial law throughout the country. The regional situation is further developing in the direction of escalating out of control, causing widespread concern in the international community. The Armenian Ministry of Defense said on the 28th that the fire density at the scene of the exchange of fire between the two sides is unprecedented, and many villages on the Asian side have been shelled. Asiatic Ministry of Defense spokesman Stephanian confirmed on the 27th that two armed helicopters and three UAVs from the Azerbaijani side were shot down in the conflict. According to the Ministry of defense of Azerbaijan, 12 anti-aircraft missile systems were destroyed in the fighting, an armed helicopter was shot down and the crew survived. As of the 28th, Armenian shelling has killed five people and injured many others in the Azerbaijani side of Tatar village. UN Secretary General Guterres recently issued a statement calling on both sides to immediately stop the military conflict, cool down the current tension and resolve the issue through negotiation. Russian President Vladimir Putin urged both sides of the conflict not to take actions to further escalate the situation in a telephone conversation with Armenian Prime Minister pasinian, and all military operations should be stopped immediately. U.S. President trump also said he would take action to prevent the escalation of the Naka conflict. The issue of Naka first involves territory and sovereignty. Naka region was an autonomous prefecture of Azerbaijan in the Soviet era. After the outbreak of war between the two countries in the 1990s, Armenian control of Naka was achieved. Most of the residents in Naka are Armenian, and they want to be independent or integrated into Armenian. For many years, small-scale conflicts have been going on in Naka region, and the escalation of this conflict is inevitable. Yang Jin, deputy director of the Central Asia Department of the Russian Institute of Eastern European and Central Asia, Chinese Academy of Social Sciences, said that Azerbaijan’s demand for “recovering its territory” is becoming stronger and stronger as its national strength rises. Many years of conflict in Naka region has also resulted in refugees and other social problems. People’s discontent and rising national sentiment have exerted great pressure on the Azerbaijani authorities. On the other hand, the Armenian side is adamant on the issue of Naka and hopes to maintain its control over the Naka region by tough means. At present, Russia, the European Union, the United States and other countries have called on the two countries to immediately stop military operations and solve the Naka issue through negotiations. Turkey openly supports Azerbaijan. According to Yang Jin, it is unlikely that Turkey will openly send troops into Naka to assist in fighting in Azerbaijan, because Armenia is a member of the collective security treaty organization. If Turkey sends troops openly, Russia also needs to send troops in accordance with its treaty obligations, and direct conflict between Russia and Turkey is inevitable. The years of war and hatred in Naka have not only caused a large number of people to leave their homeland, but also damaged regional peace and stability. As the direct parties to the Nagorny Karabakh issue, Armenian and Azerbaijani need to maintain calm and restraint and find a mutually acceptable solution through consultation and negotiation. < p > < p > at present, the public opinion is worried about the external forces’ interference in the Naka issue by force. The new epidemic situation has brought difficulties to the economic development and livelihood security of many countries. The war will only delay the process of countries’ overcoming the epidemic situation and realizing economic recovery, and damage the interests and well-being of the people. For a long time, the relationship between Azerbaijan and Armenian has been tense over the issue of Naka ownership. After the disintegration of the Soviet Union, a war broke out between Azerbaijani and Armenian around Naka, and Armenian occupied part of the territory formerly belonging to Azerbaijan around Naka. In 1992, at the initiative of Russia, the conference on security and cooperation in Europe established a 12 nation Minsk group with Russia, the United States and France as the co chairs. Since then, negotiations at different levels on the Naka issue have been held in succession within the framework of the Minsk group, but no substantive progress has been made. In 1994, Azerbaijani and Armenian reached an agreement on a comprehensive cease-fire, but the two countries have been in a state of hostility over the Naka issue. Over the years, there have been frequent exchanges of fire between Armenian and Azerbaijani in the Naka region, with soldiers and border residents often injured and killed. The war of words between the two governments over the Naka issue has never stopped.