It is worth noting that the attack was completed by the Ukrainian army using the Dot U tactical ballistic missile. In fact, when Ukraine lost all air control and sea power, the Dot U tactical ballistic missile became the only strategic weapon that could threaten Russia's rear.

Two days ago, in Berkyansk, relatively far from the front line, the Russian army suffered a precise strike from the Ukrainian army's missile . A 5,000-ton landing ship of the Russian Navy's Black Sea Fleet was directly destroyed by the Ukrainian army's missiles. It is worth noting that the attack was completed by the Ukrainian army using the Dot U tactical ballistic missile. In fact, when Ukraine lost all air and sea power, the Dot U tactical ballistic missile became the only strategic weapon that can threaten Russia's rear. The Dot U tactical ballistic missile is the short-range ballistic missile developed in the Soviet era. It has a range of 120-150 kilometers and a warhead equivalent of 482 kilograms. Ukraine inherited about 90 of the ballistic missiles since the disintegration of the of the Soviet Union. The speed of the ballistic missile is much higher than that of the ordinary cruise missile , and it uses high-spreading ballistics, which causes Russia not to be able to intercept the 100% Dot U tactical ballistic missile, and the Dot U tactical ballistic missile is also the only effective weapon that Ukraine can counter the Russian army.

As early as February 25, Ukrainian missile forces used Dot U tactical ballistic missiles to launch a precise strike on the Millerovo Air Force Base in Rostov Prefecture, Russia, causing the damage to the airport to be destroyed. This is one of the few missile achievements of Ukraine. On March 14, the Ukrainian army despicablely used Dot U tactical ballistic missiles to attack the residential areas of Donetsk . The Russian army's air defense system successfully intercepted Dot U, but the Dot U launched by the Ukrainian army used sub-compartment bullet . Although the air defense system successfully intercepted Dot U, the sub-compartment bullets of the warhead were still scattered everywhere, causing dozens of casualties.

On March 23, Berkansk also encountered a similar situation. The Berkansk area is located along the coast of Azov , close to Mariupol . As early as the war began, the Russian southern cluster advanced rapidly towards the Berkangsk region and occupied the area in just 6 days. After occupying the area, Russia facilitated the use of Berkangsk's port as an important supply location for transporting materials, and the Russian Black Sea Fleet used landing ships to transport troops and ammunition and drug supplies here. Starting from February 25, Ukrainian missile forces have used Dot U to launch irregular strikes on the Russian troops in the city.

It is said that NATO and European countries have been secretly providing intelligence support to Ukraine, so that the coordinates of the Russian Black Sea Fleet in Berkansk were completely exposed, so the Ukrainian army used dot U to strike the fleet on the sea, but they were still intercepted by the Russian air defense system. However, like the case where Dot U encountered in Donetsk, this time the Dot U was still equipped with a child warhead, a 9N123K cluster warhead, containing 50 9N24 fragmented sub-munitions (each weighs 7.45 kg, and an explosive equivalent of 1.45 kg contains 316 fragments). The mass of the warhead is 482 kg, and the number of fragments of the mother bullet is 15,800, and the killing range is very large. The warhead of this missile will automatically open at a height of 2250m from the target, and drop a mother bullet, which can cover a range of 35,000 to 70,000 square meters. This warhead is designed to attack people in open areas and non- armored vehicles .

Therefore, after the invading dot U was intercepted by the Russian air defense system, the sub-compartment bullets were scattered unbiasedly near the Russian landing ship on the beach of Berkansk. The ammunition storage of the Russian landing ship hit by the sub-compartment bullets, resulting in the landing ship's ammunition explosion. This series of joint reactions caused the ship, which was more than 5,000 tons, to be completely destroyed on the shore. The Russian army probably did not expect that the use of landing ships to transport ammunition would be triggered by Ukrainian mother-sub-busting bombs. Ukraine's accident was purely a blind cat who encountered a dead mouse , and it was a pure coincidence that it could hit.

However, the Ukrainian missile force also set a world record, which was to successfully use ballistic missiles to destroy an warship in actual combat, and the world's first anti-ship result.

Of course, the Ukrainian army was able to successfully use Dot U to carry out continuous attacks on the Russian army, mainly because the Russian army's heavyweight air defense systems S300 and S400 are deployed in the border areas. Since Ukraine has relatively large armed forces in the Ukraine, Russia dare not easily deploy such top-level equipment to Ukraine, which leads to the time of intercepting Dot U every time. In addition, due to distance, it is often because the ballistic missile has already flown over the target, and subsequent air defense missiles intercept it, but this causes the sub-compartment bullets to scatter into the target area, causing personnel and equipment losses to the Russian army. Therefore, with the subsequent Russian army exterminated the Ukrainian local armed forces to ensure sufficient security, the Russian army's S300 and S400 may be deployed in Ukraine in the past. At that time, the Ukrainian Dot U's threat to the Russian army will be greatly reduced.