Two of Ukraine's most prominent drone experts have warned that Russia's next phase of the air war will move beyond jet-powered Shahed drones toward an arsenal of cheap cruise missiles, led by a partly 3D-printed weapon unveiled this week by Ukraine's military intelligence agency, the GUR.
Serhii "Flash" Beskrestnov and Serhii Sternenko, both former drone advisers to Ukraine's defence ministry, wrote on their Telegram channels that the Filin, an 11-foot (3.4-metre) winged missile, could overshadow the threat posed by the Shahed.
"The mass use of this type of aerial attack weapon is what awaits us very soon," wrote Sternenko, who runs a foundation that crowdfunds for Ukraine's military. "Then we will remember the jet Shaheds only as a small problem compared to this."
The GUR released detailed findings on the Filin on Wednesday, saying Russia began deploying it at the end of summer 2026. The ground-launched missile carries a 100-kilogram warhead and, according to Russian claims cited by the agency, can fly at almost 500 mph (805 km/h) over a range of 745 miles (1,200 km), compared with a top speed of 370 mph for the Geran-5, the most advanced jet-powered drone Russia has deployed so far. The GUR said the Filin can fly at "ultra-low altitudes" and as high as 3.7 miles.
Beskrestnov, a drone analyst, said he had "long predicted that our adversary is betting on cheap cruise missiles for the future, not on jet Shaheds." He wrote that the Filin flies faster, manoeuvres better and carries a heavier payload than Russia's current turbojet drones. "They do not need drone ports, many of them can be launched from helicopters and UAVs. And most importantly, they can be produced from Russian components," he added.
The GUR said the missile's fuselage is made of carbon and fibreglass, with some parts produced by 3D printing, and that its engine is Russian-made, unlike the Chinese engines used on many of Moscow's turbojet drones. The agency listed 35 components sourced from the US, 22 from China, and 13 from Japan, Switzerland, Taiwan and the Netherlands, spread across the missile's flight controller, inertial navigation system, equipment control unit and counter-jamming hardware.
The Filin follows another low-cost weapon, the Banderol, which emerged in spring 2025 and has strained Ukraine's air defences in recent months. The Banderol reaches a maximum speed of 435 mph and is estimated to cost about $150,000 per unit, roughly one-sixteenth the price of a traditional Kh-101 cruise missile, making it easier to mass-produce. Ukrainian officials have described the frequent use of such weapons as "missile spam" aimed at exhausting air defences.
"What is the Air Force command doing now to build up countermeasures in advance?" Sternenko wrote.