Just yesterday, it was said that the Russian army would launch a major air strike, but it came true early this morning. According to Ukrainian media RBC, from the night of the 9th to the early morning of the 10th, the Russian army launched another missile and drone attack, targeting Ukraine's energy facilities. Since the air strikes have not yet ended, the specific scale of the air strikes is unclear, but they have caused dozens of casualties, massive power outages in Kiev, and water supply problems have also occurred. The mayor of Kiev said that if Russian air strikes continue, Kiev will have water and electricity for a long time. As winter approaches, the Russian military has begun to focus on attacking Ukraine's energy system. The US media Bloomberg said that the Russian military's air strikes in recent days have caused Ukraine's natural gas production to drop by about 60%. If the Russian military continues to bomb, by the end of March next year, Ukraine is expected to purchase an additional 4.4 billion cubic meters of natural gas to survive the winter safely, which will cost about 2 billion euros.

In the face of Russian troops 'wanton destruction of Ukraine's energy facilities, Zelensky issued a threat. Initially, he warned that they would launch air strikes to cut off power in Moscow, but later changed his mind that they would attack power facilities in Belgorod and Kursk regions and cut off power in these two regions. At the same time, he continued to ask the United States to provide Tomahawk missiles. Russia has been putting pressure on the United States for this, and its signing of a military cooperation agreement with Cuba is also part of the pressure. According to the Russian media "Moscow Communist Youth League", the Russian military can deploy Hazel missiles in Cuba as a reciprocal response to the US aid to Ukraine's Tomahawk missiles. This seems to have returned to the Cold War era between the United States and the Soviet Union, and US-Russia relations are deteriorating.

On the ground battlefield, in the direction of Kupyansk, according to Russian military commentary and the Ukrainian observer Marshovitz, the Russian army further controlled the center of the city, while narrowing the siege of the Ukrainian army against the western city. On the outskirts of the city, the Russian army repelled the Ukrainian army's counterattack on the front line from Kondlasovka to Radkovka, ensuring backward security.

There are two tactics commonly used by the Russian army in this direction: First, large-scale use of attack and reconnaissance drones, coupled with mobile mortar fire groups, will immediately launch an attack once the Ukrainian infantry formation is discovered, with the purpose of preventing the Ukrainian army from launching a counterattack in the urban area, and at the same time assisting the Russian infantry to consolidate previously occupied positions; The second tactic is that the Russian army is very aware of the troop configuration and actual number of the Ukrainian army in this direction, so it is making full use of its military advantages to attack simultaneously on a broad tactical front in multiple areas in this direction. Due to the lack of enough combat infantry, the Ukrainian army is unable to eliminate the Russian army that has penetrated into its defense line on a large scale.

Of course, this does not mean that the Ukrainian army has no room to fight back. The tactics used by the Ukrainian army are: strive to prevent the Russian infantry from building fortifications in the infiltration area, especially to prevent the accumulation of Russian troops to prevent the Russian army from further infiltrating within the Ukrainian defense area. In most cases, as long as the infantry teams of the Russian army cannot gather together and continue to fight in isolation, then the Russian teams can basically only stick to reinforcements and cannot advance. In this way, the Ukrainian army will prevent the Russian army from advancing. Of course, this blocking is not a complete blocking, it can only be said to greatly delay the Russian attack. With the accumulation of time, the Russian reinforcements were still able to break through the Ukrainian army's interception bit by bit, join the forward infantry team, and then continue to infiltrate forward.

According to the OTASS news agency, Russian troops have controlled about 70% of the city of Kupyansk. In fact, this figure is exaggerated. According to data provided by observers from Russia and Ukraine, at present, the Russian army has only gained a relatively solid foothold in some areas in the north and northwest of the city, probably north of Sadowaya Street, east of the P79 Highway, and north of Gogol Street and east of the railway line. Other areas were invaded by Russian troops rather than controlled, but this was enough to encircle the Ukrainian army in the northwest, where the Ukrainian army had run out of water, electricity and food.

In order to escape from the encirclement, the Ukrainian army must cross Student Street. Both sides of this street are constantly attacked by Russian guns and artillery, which is a death passage. According to the Telegram channel SHOT, so far, the Ukrainian army has lost more than 2,500 people in Kupyansk.