Russian Air Defense Under Pressure: Why Ukrainian Drones Have Exposed the Kremlin’s Weak Spot
Russia’s air defense system is increasingly failing to respond in time to Ukrainian long-range drones and missiles. For Moscow, this is no longer a series of separate failures, but a problem affecting military facilities, oil refining, ports, logistics, and the ability to cover the country’s vast territory. For years, Russia invested in expensive systems designed for a different kind of war, but Ukrainian attacks have shown that mass-produced cheaper drones, technological solutions, and systematic work against Russian air defense are changing the rules of the game. The problem is not only the number of Ukrainian drones. It is that Moscow failed to create a layered system capable of cheaply, quickly, and massively intercepting aerial targets far from the front line.
Ukrainian strikes in recent months have exposed the weakness of the Russian approach. Russia is forced either to spend expensive missiles on relatively cheap drones or risk important facilities being hit. This is a bad choice for any army every interception becomes financially inefficient, while every missed drone can strike infrastructure that supports the war. Russian military bloggers are already acknowledging this problem. One of them wrote directly:
“Ukraine has found our ‘Achilles’ heel’ and will double drone production by summer. Europe is stamping them out by the thousands. And we continue to shoot down cheap UAVs with expensive missiles and justify ourselves by saying: ‘absolute air defense does not exist’”
This is an important admission. It shows that even within Russia’s pro-war circles there is a growing understanding: the problem is not temporary. Ukraine is increasing production, improving routes, expanding range and strike accuracy, while Russia is forced to catch up.
The first direction Russia is trying to copy is the creation of “small air defense.” Ukraine has already gone through this path mobile fire groups, interceptor drones, detection systems, radars, acoustic sensors, tablets with data, operators, and coordination between different units. This is not one type of weapon, but an entire network where every element must work on time. Russia is trying to create mobile fire groups to protect critical facilities. This means machine guns on vehicles, anti-aircraft guns on mobile platforms, reserve units, and patrols near important sites. But successful Ukrainian strikes on Russian infrastructure show that this system is either not yet fully deployed or works unevenly. The reaction after attacks on facilities in Novorossiysk and other regions was telling. If, after strikes, authorities in certain regions only announce the creation of additional mobile groups, it means that a prepared system was not ready in advance. Russia is reacting after the hits, not preventing them. The second major element is interceptor drones. For Ukraine, they have become an important part of protection against Shaheds, Gerberas, and other UAVs. Their advantage lies in cost, production speed, and scalability. But even Ukraine needed time for this: it had to develop standards, find manufacturers, purchase components, train people, establish technical control, and connect all of this with the detection system.
Russia is still at a much earlier stage. Russian interceptor prototypes appear, are tested, and are discussed, but there are no signs of mass production or broad use yet. Some developments are intended more for countering FPV drones, heavy bomber drones, or reconnaissance UAVs, rather than Ukrainian long-range drones that fly significant distances.
Even if Russia quickly increases the number of interceptors, this will not be enough. A drone must be detected in time, correctly classified, the data must be passed to an operator, the means of interception must be directed, and the target must not be lost. This is where the third and probably most difficult problem appears – the command system. The Ukrainian model has shown that effective air defense against drones requires not only weapons, but also software. The system must combine data from radars, acoustic sensors, and other surveillance tools so that operators see the air picture not in fragments, but as one field. Ukrainian experience with such solutions has already attracted the interest of allies, because it was born in a real war, not in theoretical plans. President Volodymyr Zelenskyy explained that interceptors alone, without operators, software, and a radar field, do not work properly. This is an important point for understanding Russia’s problem. Buying or producing a drone is not enough. A link must be created between target detection, decision-making, and destruction. It is difficult for Russia to quickly build such a network because of the scale of its territory. Ukrainian strikes cover different regions, and the number of potential targets is huge oil refineries, ports, warehouses, air bases, factories, energy facilities, military units. It is impossible to cover everything at once. If air defense is concentrated near Moscow, industrial and military facilities become weaker. If forces are stretched across the entire country, the density of protection drops. A separate issue is aviation. Ukraine actively uses aircraft and helicopters as an auxiliary part of air defense. They cover mobile groups, patrol the airspace, and can work against drones during massive attacks. Russian bloggers suggest integrating fighters and helicopters into their own air defense system, but Russia has limitations here as well.
Most Russian fighter jets are involved in the war against Ukraine. They carry out missions at the front, including dropping guided aerial bombs on Ukrainian positions and cities. Pulling part of the aviation away for constant protection of rear facilities means weakening other directions. Helicopters could theoretically help, but this requires repairs, crews, fuel, combat duty, and proper coordination. Even Russian military authors write that some equipment is idle, while decisions have not been made for years. The third direction is unconventional solutions. Ukraine previously created FrankenSAM by adapting Western missiles to Soviet launchers. Russia is also trying similar approaches, including launching R-77-1 air-to-air missiles from ground platforms. Such solutions have potential, because Russia may have missile stocks, and the characteristics allow them to work against aerial targets. But this does not replace a full-fledged system. Such solutions can cover individual sections, but they do not solve the problem of the entire country.
Moscow may also turn to partners for help China or North Korea. Their air defense systems are largely based on Soviet and Russian developments, so compatibility problems may be smaller than with other countries. But even if equipment is delivered, Russia still needs deployment, maintenance, logistics, and integration of these systems into overall command. This does not provide instant protection. For Ukraine, this situation creates an important period. While Russia is only searching for answers, Ukrainian strikes are becoming longer-range, more frequent, and more varied. In April, at least 18 strikes were recorded against Russian oil infrastructure and at least 41 strikes against military facilities in different regions of Russia. This shows that the campaign is not random, but systematic. The most painful area for Russia is the oil sector. Ukrainian attacks on ports and oil refineries are already affecting production and revenue. In April, Russia reduced oil production by 300,000-400,000 barrels per day compared with the first months of the year. This is the lowest production level in the past six years. For a budget already under pressure from the war, such losses matter. The drone war is entering a phase where the consequences are measured not only by destroyed facilities, but also by economic exhaustion. If Russia is forced to spend expensive missiles on cheap targets, repair refineries, redeploy air defense, limit port operations, and lose part of its oil revenues, this gradually reduces its ability to wage a long war. Ukraine is simultaneously increasing drone production and working on its own missile capabilities. If new ballistic systems are added to mass drone strikes, the task for Russian air defense will become even more difficult. Ballistic targets are much harder to intercept, and Russia does not have enough S-400 and S-500 systems to cover all important directions.
Russia missed the moment when it could calmly rebuild its air defense for the new reality of war. Now it has to do this in a hurry, under strikes, and across a vast territory. This is what opens an opportunity for Ukraine to increase pressure on the military and economic foundation of Russian aggression. This is not about one-off attacks, but about gradually destroying Russia’s ability to freely supply the front with fuel, money, equipment, and logistics. The coming months may become a period of forced search for answers for Russia. But even with the most active efforts, it will have to catch up with what Ukraine has been building for years: mobile groups, interceptors, software, a detection network, coordination, and combat experience. In a war where the speed of adaptation often matters more than the amount of old equipment, this may become one of the Kremlin’s most serious problems.
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