KYIV, Ukraine — Ukrainian secret services were able to attack strategic bomber aircraft at Russian air bases on Sunday by hiding explosive-laden drones inside the roofs of wooden sheds, according to a Ukrainian security official and images posted online.
Ukraine’s domestic security agency, the SBU, acknowledged that it carried out the attacks and said they caused considerable damage.
The sheds were loaded onto trucks that were driven to the perimeter of the air bases. The roof panels of the sheds were lifted off by a remotely-activated mechanism, allowing the drones to fly out and begin their attack, the official said.
The security official, who spoke on condition of anonymity, said strikes were conducted on Sunday on four air bases, and that 41 Russian warplanes were hit.
An SBU statement posted on the Telegram messaging app estimated the damage caused by the assaults at $7 billion.
“Thirty-four percent of strategic cruise missile carriers at the main airfields of the Russian Federation were hit,” the SBU said on Telegram.
In this image taken from video by a source in the Ukrainian Security Service shows a Ukrainian drone striking Russian planes deep in Russia’s territory, June 1, 2025. (Source in the Ukrainian Security Service via AP)
Unverified videos and pictures posted on Russian social media showed Russian strategic bombers on fire at the Belaya air base in the Irkutsk region of Siberia.
Igor Kobzev, the regional governor, said there had been a drone attack on a military unit near the village of Sredny, which is near the Belaya base, though he did not specify what the target was. He said the drones had been launched from a truck.
The Irkutsk region attack was the first time a drone assault had been mounted by Ukraine so far from the front lines, which are more than 4,300 km (2,670 miles) away.
That is beyond the range of the long-range strike drones or ballistic missiles Ukraine has in its arsenal, so a special scheme was required to get the drones close enough to their target.
Photographs shared with Reuters by the Ukrainian security official showed dozens of short-range quadcopter drones piled up in an industrial facility. The official said these were the same devices used in the attack.
This combination of pictures created on May 12, 2025, shows Russian President Vladimir Putin and Ukraine’s President Volodymyr Zelensky. (Gavriil Grigorov and Nhac Nguyen/Various Sources/AFP)
Other images shared by the official showed the wooden sheds with their metal roofing panels removed, and the drones sitting in the cavities between roof beams.
A separate video posted on Russian Telegram channels, which has not been verified by Reuters, appeared to show matching sheds on the back of a truck.
The roof panels can be seen lying on the ground next to the truck, and the video footage shows at least two drones rising out of the top of the sheds and flying off.
The Russian online media outlet that posted the video, Baza, said in a caption that it was filmed in the district near the Belaya air base.
The Irkutsk region air base hosts Tupolev Tu-22M supersonic long-range strategic bombers, a type of aircraft that has been used to launch missiles against targets in Ukraine.
The operation was code-named “Spider’s Web,” according to the Ukrainian security official, and was personally overseen by Ukrainian President Volodymyr Zelenskiy and Vasyl Maliuk, head of the SBU domestic intelligence agency.
Head of the Security Service of Ukraine Vasyl Maliuk delivered a report regarding today’s operation. An absolutely brilliant result. A result achieved solely by Ukraine. One year, six months, and nine days from the start of planning to effective execution. Our most long-range… pic.twitter.com/oN41NFYyfw
— Volodymyr Zelenskyy / Володимир Зеленський (@ZelenskyyUa) June 1, 2025
Zelensky confirmed the mission in a post on X, calling it “an absolutely brilliant result” and saying it was “achieved solely by Ukraine.” He described the operation as the country’s “most long-range,” noting it took “one year, six months, and nine days from the start of planning to effective execution.” Zelensky added that Ukrainian operatives were safely withdrawn from Russian territory and that the action “will undoubtedly be in history books.”
This confirmation makes the strikes the most damaging Ukrainian drone attack of the war, creating a significant setback for Moscow.
The source shared video footage shot from a drone, saying it showed one of the strikes. The images showed several large aircraft, some of which appeared to be Tu-95 strategic bombers, on fire.
Some military analysts have likened Ukraine’s elaborate drone operation to a covert Israeli strike in September 2024, when Israel remotely detonated beepers and walkie-talkies it had earlier distributed to Hezbollah operatives in Lebanon. That unprecedented and coordinated attack killed at least nine people and wounded some 2,800, after the devices exploded nearly simultaneously across multiple sites.
“[Israel’s] pager operation against Hezbollah, and Ukraine’s drone ambush today are separated by decades, geography, and technology — but united by three timeless elements: superior intelligence, operational innovation, and strategic audacity,” said Chair of Urban Warfare Studies in The Modern War Institute at West Point John Spencer.
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