Ukraine has escalated its campaign against Russian air defense systems, using expanding drone production and more advanced strike technologies to destroy twice as many air defense assets and radars in April compared to October 2025.
German outlet Der Spiegel, citing WarSpotting data, said Ukrainian forces destroyed 37 Russian air defense systems, radar units, and electronic warfare assets between March and May 10 – more than double the 16 recorded in autumn 2025.
The strikes are increasingly focused on medium-range targets within 200 kilometers (124 miles) of the front line, where drones are reportedly knocking out systems such as Tor and Buk, and in some cases more advanced S-300 platforms.
These attacks are creating widening “gaps” in Russia’s air defense network, affecting both battlefield logistics and rear infrastructure.
Der Spiegel said around 600 drone strikes were carried out on Russian-occupied territory between January and April, with particularly heavy pressure in the south, where shorter distances to supply routes – in some cases just 90 kilometers (56 miles) – put Russian logistics lines and Crimea-linked supply corridors at risk.
The report also cited Russian defense ministry figures, published via state media, that claimed more than 11,000 drones were intercepted over Russia in March alone – roughly double February’s total – though it did not specify how many reached their targets.
The Institute for the Study of War (ISW) said the increasing intensity of Ukrainian drone operations has coincided with a slowdown in Russian battlefield advances since late 2025, alongside repeated complaints from Russian military bloggers about shortages of air defense missiles.
Beyond the front line, Ukrainian drones have also struck deep into Russian territory, targeting oil refineries and industrial sites. Der Spiegel reported 23 attacks on oil facilities and 20 on industrial and agricultural targets in April and May alone.
Among the sites hit were facilities in Russia’s Perm region, around 1,500 kilometers (932 miles) from Ukraine’s border, including a Lukoil-linked refinery and a Transneft pumping station, both of which reportedly burned for days.
Industry sources told Reuters that the Permnefteorgsintez refinery halted operations due to fire damage, with repairs expected to take weeks.
Analysts cited in the report argue that even a significant expansion of Russian air defenses would struggle to cover the country’s vast territory, spanning 11 time zones and thousands of critical military and energy sites.