Russia's latest jet-propelled Geran-4 and Geran-5 one-way attack drones fly at 500 km/h or more, nearly three times as fast as an older, propeller-driven Geran-2.

That's too fast for many of Ukraine's air defenses. In particular, the inexpensive interceptor drones that Ukrainian forces deploy by the thousand.

Russia launched more than 2,700 jet Gerans at Ukraine in September, and Ukraine is shooting down only about 55% of them, according to Ukrainian President Volodymyr Zelenskyy. The speed disparity is a big part of the problem.

Ukrainian forces are scrambling for new defenses against the speedy Gerans. Among the best is actually a Ukrainian take on the Geran-4 and Geran-5: a fast, jet-propelled one-way attack drone that the Ukrainians have modified for air-to-air use.

Against jet drones, the air-to-air Bars have a hit rate of around 30%, Zelensky said during a joint press conference with German Chancellor Friedrich Merz in Kyiv on 4 October. "The Bars have shown positive results," Zelensky said. "They currently have the highest percentage. Others are also catching up."

In July, Ukraine and Germany agreed to jointly produce Bars, with Germany financing the first phase. Ukraine has reportedly been launching Bars at targets on the ground since at least the summer of 2025. But it was only recently that clear photos and videos of the drones have circulated.

Over the weekend, Ukraine’s 1021st Anti-Aircraft Missile and Artillery Brigade released footage of one jet drone hunting another. Observers identified the interceptor as a Bars and its target as a Geran-5. After launching from an elevated ramp with help from a rocket booster, the drone's operator—seeing what the drone saw through a front-facing infrared camera—steered the drone toward the Russian drone, possibly destroying it.

Exactly how the operator controlled the Bars—whether by satellite or mesh radio or some other command and control system—is unclear. Equally unclear: what kind of warhead a Bars would employ in the air-to-air role. Many smaller interceptor drones lack warheads. Instead, they simply slam directly into their targets, wrecking them in the collision.

Ukraine’s 1021st Anti-Aircraft Missile and Artillery Brigade has released the first footage of the Ukrainian Bars jet-powered drone in its interceptor configuration engaging a Russian Geran-5 drone. https://t.co/FRBKZQR9lF pic.twitter.com/njPJWXsDwo

— Special Kherson Cat (@bayraktar_1love) October 17, 2026

Mystery drone

Bars isn't small. It likely packs an explosive warhead. Potentially one that the operator can remotely trigger when the interceptor passes near its target.

Bars is adaptable. Its maker has reworked it from a 22-kg warhead and a 700-km range to a 60-kg warhead and a stated range of more than 1,000 km, and a heavier variant can carry a 105-kg warhead.

In the air-to-air interceptor role, long range is terribly important but speed is everything. There's an obvious way for the Ukrainians to boost the Bars' speed from its reported 700 km/h top speed to potentially even faster. They could shrink the drone's warhead and its fuel load, making it lighter in order to make it faster.

That may explain how a Bars can chase down a Geran-5 even as the Russians, by one Ukrainian analyst's estimate, try to push the Geran-5 toward 700 km/h or more.

Cost is important, too. Russia churns out Gerans for an estimated $100,000 or so per drone. The cheaper the drone, the more copies the Russians can fling at Ukrainian cities. If it takes three or more interceptor drones to take down each of those 2,700 jet Gerans, Ukraine may need to deploy 8,000 to 10,000 interceptors a month.

Ukraine already builds more than 2,000 Bars a month, its maker says, but mostly in strike versions. How many go to air defense, and how much each costs, isn't public.

The supply of small jet engines could be a constraint. “Engines are a key element; we really import them in large quantities,” Zelensky said in an interview with Financial Times. "There are also domestically produced engines, but there are not enough of them.” A Ukrainian-made engine for Bars passed final tests in September.

Intercepting a jet-powered Geran can cost anywhere from $2,000 to $4 million depending on the weapon used. Cheap interceptor drones are the only option that keeps air defense affordable, the foundation of Ukrainian top war volunteer Serhii Sternenko said on Telegram.

Russia’s jet Gerans now carry every characteristic of a small cruise missile, and Russians keep raising their speed in answer to each Ukrainian countermeasure. Former commander-in-chief Valerii Zaluzhnyi has framed the shift bluntly: an expensive Cold War missile has become a cheap weapon fired in bulk, and the drone is now “a missile in all but name,” affordable to any side, not only wealthy countries.

Sternenko heads a charitable foundation that has purchased 291,502 FPV drones, which have helped Ukraine’s military down more than 12,954 aerial targets. Also, has advised the team of former Defense Minister Mykhailo Fedorov.

Three ways to kill a jet Geran, and what each costs

The foundation laid out the price of each method:

• Aircraft (F-16, MiG-29, Su-27, Mirage 2000): $25,000 to $1.2 million per kill. Effective, but the stock of missiles is critically low, and some air-to-air types are no longer being replenished.
• Surface-to-air and shoulder-fired systems (IRIS-T, NASAMS, Vampire, Avenger): about $30,000 to $4 million. Good for shielding key sites, but a missile capable of reaching a jet Geran at 6 to 7 kilometers costs $0.5 million to $4 million.
• Interceptor drones (makers undisclosed): from $2,000. Cheap, with trained operators ready, but not yet scalable.

Why the cheapest option is the one that matters

No single tool is enough, the foundation stresses. Downing jet Gerans still needs aircraft, small aviation and missile systems together, but it is the interceptors that make the defense affordable, taking out the cheaper Shaheds and saving costly missiles for targets nothing else can reach.

The foundation says it has found a way to counter drones that already match small cruise missiles, working with Ukrainian manufacturers, without disclosing details. The method is far cheaper than other ways of downing jet Gerans and significantly strengthens air defense, it says, as part of a wider Ukrainian push to field interceptor drones fast enough to catch Russia’s fastest weapons.

The commander of an interceptor battalion in Ukraine’s 3rd Army Corps said his unit destroyed several thousand Russian aerial targets during Operation Vivaldi, ArmyInform, the Defense Ministry’s news agency, reported on 21 October.

Operation Vivaldi is a Ukrainian counteroffensive north of Lyman in Donetsk Oblast, where the 3rd Army Corps has reported liberating settlements. In its third phase, Ukrainian forces reclaimed five settlements and expanded their gains to 176 square kilometers. Strikes on Russian logistics and electronic warfare likely neutralized Russia’s drone defenses before Ukraine sent in armor, the Institute for the Study of War assessed.

The commander, who uses the callsign “Betsyk,” leads the interceptor battalion of the 1030th Anti-Aircraft Missile-Artillery Regiment “Aquila,” part of the 3rd Army Corps. He said Russian forces deployed large numbers of reconnaissance drones to locate Ukrainian positions after the corps began advancing.

Betsyk named Zala, Orlan, Supercam, Merlin, and Knyaz Veshchiy Oleg among the reconnaissance drones used by Russian forces.

Russia also brought in reinforcements and units operating strike drones, including first-person-view (FPV) quadcopters, Molniya fixed-wing FPV drones, and Lancet crews, he said. At one stage, Russian forces deployed crews from their Rubicon drone unit to disrupt the advance, but the move did not change the situation.

Betsyk said his battalion’s work deprived Russian forces of the ability to strike Ukrainian troops and track their movements.

Jet-powered Shaheds: speed is the main challenge

The regiment also works against Russian strike drones heading for targets behind the front line. Betsyk said interceptor crews had destroyed some jet-powered drones, but not in significant numbers.

The main difficulty is speed, he said. Interceptor drones need to reach 500–600 km/h to intercept Russian jet-powered attack drones, according to Betsyk.

For now, the regiment mainly uses conventional air-defense systems against these targets: self-propelled anti-aircraft systems, surface-to-air missile systems, and portable surface-to-air missile systems. Betsyk said these systems were historically designed to engage jet-powered targets.

He compared the current challenge with the early use of piston-powered Shaheds. Those drones initially posed a serious threat but later became easier for Ukrainian air defenses to counter. Russia has largely stopped using piston-powered Shaheds on most fronts since summer, he said, but continues to use piston-powered Gerbera drones, which are relatively cheap and can partly exhaust Ukrainian air defenses. The main drones Russian forces use now are jet-powered Shaheds, he said.

Betsyk expects Russian forces to adapt if Ukraine fields effective interceptors against jet-powered drones. They will seek ways to evade the interceptors, increase speed, improve navigation, and change their tactics, he said. However, he added that the battalion had not observed a major evolution so far and did not expect the drones’ speed to double.

What the corps says Vivaldi achieved

Separately, 3rd Army Corps commander Andrii Biletskyi said Ukrainian forces retook 277 square kilometers and 16 settlements during Operation Vivaldi, Ukrainska Pravda reported. Biletskyi also said Russian losses exceeded 8,000 personnel, according to ArmyInform. These figures are Ukrainian claims and have not been independently verified.

Ukrainian drone maker Wild Hornets is rethinking projects it is currently working on, including launching interceptors from aerial platforms, because of limits on SpaceX’s Starlink satellite internet. Spokesman Mike Orliuk told The War Zone (TWZ) this on 20 October. The company builds Sting interceptors, which it says destroyed over 15,000 Shaheds and Gerberas, a cheaper Shahed lookalike, in a year. Orliuk said Sting’s current operations are unaffected.

The stakes rise as Russia shifts to faster drones. Ukrainian defense technology adviser Serhii Beskrestnov counted more than 2,500 jet-powered Gerans, Russia’s version of the Shahed, in August. President of Ukraine Volodymyr Zelenskyy said on 16 October that these drones fly faster than 400 km/h. He added that some Ukrainian interceptors chasing them work through Starlink. When the link was slowed, Ukraine could not intercept some of them, he said.

How Sting stays connected

“Our own communications system provides the basic connection to our interceptors,” Orliuk said. The company’s remote-control technology can draw on various internet sources, he added, though the military often uses Starlink. Even then, the terminal does not need to move at high speed. It only links the command center to a ground station, which Orliuk compared to a cell tower.

“For these needs, everything is operating normally with Starlink at the moment,” he said.

An air-launch project under review

“Some drones carry a terminal on board and need to fly at high speed with it,” Orliuk said. “In such cases, Starlink’s limitations make their operation impossible.”

That is why the company is rethinking the air-launch project. Wild Hornets has made no clear decision yet but will test alternatives, Orliuk said. He declined to describe them.

“I believe, in any case, depending on a single solution is very risky,” he said.

Other firms share the concern

Orliuk said he has spoken with other companies that rely far more on Starlink and have expressed concerns. He pointed to growing interest in Europe’s Eutelsat network, though “creating something like Starlink won’t be easy.”

Who ordered the slowdown remains unclear. The order to slow Ukraine’s Starshield service came from inside the White House, two US officials and a Western official said. A US official told TWZ the president never made such a request. US Secretary of State Marco Rubio said on 17 October that the slowdown had “nothing to do with the White House” and called “a report on that” “categorically false,” without saying which report he meant.

Elon Musk ordered the speed cap on Starshield, the military version of SpaceX’s Starlink network that Ukraine’s drones rely on, The Wall Street Journal reported on 20 October. Earlier, Musk said that such limits are decided by the US military and “ultimately POTUS.” Speaking to reporters in Eau Claire, Wisconsin, on 20 October, according to WSJ, US Defense Secretary Pete Hegseth said, “We haven’t made any directives or anything like that,” CBS News reported.

For a week, no one with a hand on the system said the decision was theirs. Musk pointed to the US military and the president, and Trump said he did not know who it was. Meanwhile, Ukrainian officials said the cap has hampered the drones they use to intercept Russian Shaheds and to strike Russian forces in occupied territory. Kyiv says the cap remains in place, and at about 160 km/h it makes intercepting jet-powered drones and missiles that fly about twice as fast virtually impossible.

Musk spoke with administration officials, including Trump, before the cap, a source says

Musk capped the speeds at which Ukrainian hardware could stay connected to the network, people familiar with the matter told WSJ. The slowdown, which began on 14 October, left some of Ukraine’s strike and interceptor drones virtually useless, WSJ said.

WSJ’s sources differ on Trump’s role. Some US officials said Musk acted on his own and that Trump did not specifically order any retribution against Ukraine. One person said Musk spoke with several senior administration officials, Trump among them, before imposing the cap. Two people said Musk and Trump discussed the decision by phone soon after the slowdown became public.

During the uproar, SpaceX representatives called White House counterparts. They asked for a shared message that the company and the administration had coordinated before Musk’s directive, the people said. The White House ran an informal inquiry into who ordered the slowdown, WSJ said.

Musk held several conversations with administration officials before the order to understand the president’s thinking, CBS reported, citing sources. He dislikes his company being seen as profiting from the war, and it is unclear how his order was carried out, CBS said.

Musk pointed at the US military over Ukraine’s satellite limits. Now a US official says the administration had nothing to do with them

Hegseth points to Starlink’s terms of service

Hegseth said the US had not pulled anything back. He said Starlink “has the option” to make decisions under its terms of service, and that from the Pentagon’s view nothing had changed, CBS reported.

Speaking to reporters as he left the White House on 16 October, Trump said he did not think either he or Musk was responsible, The Telegraph reported. On 19 October, he said, “I don’t know who it was, but I’d like to find out.”

Last week, a bipartisan group of senators asked the Pentagon’s inspector general to investigate whether officials “directed” or “authorized” changes to Starlink and Starshield services and intelligence sharing affecting Ukraine.

Earlier reports pointed at the White House

On 15 October, Reuters reported that the order came from inside the White House. The officials said Pentagon leaders received a message that the Starshield service for Ukraine’s military needed to be slowed, but did not say who made the decision or who carried it out. A senior US official said “No such request was ever made by the president.”

On 16 October, The Telegraph reported, citing four sources, that Musk approached Trump with the idea of the speed limits. One of the sources said Trump agreed.

Analysts and Kyiv say the cap is still in place

Michael Kofman, a war analyst at the Carnegie Endowment, said, according to WSJ, that Ukrainian strike and interceptor drones remain limited to 160 km/h. He said actual connections run below 130 km/h, which still hampers strikes and air defense.

On 20 October, Ukraine’s top diplomat in Washington, Denys Sienik, said Kyiv was still waiting for answers from the Pentagon and SpaceX, WSJ reported.