 Ukraine in attack. Russians prepare for defense. The Russian military prepares to defend the city of Luhansk. The spokesman of the East Group of the Armed Forces of Ukraine, Serhii Chervate, said this. According to information, the Russians planned to use concrete structures to defend the city. Chervate said that the preparations made by the Russians could not be prevented by the Ukrainian army, and that they would overcome the obstacle. He noted that the country's military engineers are among the best in Europe. At present, Russian military sends in more troops and prepares for defense. Russia intends to build a solid and durable line of defense. General Sergei Serovikin's strategy as commander for Russia's military operation Ukraine can be summarized as switching to strategic defense on all fronts. With the possibility of diversionary attacks and local tactical offenses to improve Russia's position, Russia intends to build a solid and durable line of defense in the territories it has occupied in order to prevent any major breaches by the Ukrainian Armed Forces or any further shifts in the new borders. Russia aims to put a stop to the intensive fighting, effectively freezing the conflict and retaining the territorial gains it has made so far. That is all the Russian command is capable of right now. Russia's critical lack of modern military hardware prevents it from being able to launch offenses against the Ukrainian army.