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Prevalence of Fiber-Optic FPV Drones in the Kharkiv Area

As of May 2026, Russian forces use fiber-optic FPV drones on approximately 90% of their attack drone missions in the Kharkiv oblast, according to Serhii Lavrentiev, a drone operator with the Ukrainian Forpost brigade . This marks a dramatic shift from radio-controlled drones . The first fiber-optic FPV drone strike on Kharkiv city itself was recorded on February 25, 2026, when a drone hit a tree in the Kyivskyi district .

Cable Lengths Up to 50 km

Ukrainian sources report that Russian forces are now using fiber-optic spools of up to 50 km, enabling strikes deep into urban areas while remaining resistant to electronic warfare interference . In 2025, spools were typically 20 or 30 km; the jump to 50 km represents a significant capability increase . Ukraine's First Deputy Prime Minister Mykhailo Fedorov confirmed to Business Insider in November 2025 that Russia was fielding 50 km-range fiber-optic drones .

Russia's First Fixed-Wing Fiber-Optic UAV: The Molniya Adaptation

Russia has adapted its Molniya fixed-wing drone for fiber-optic control, creating what is effectively its first large-scale, unjammable fixed-wing UAV. A report from September 2025 noted that the fiber-tethered Molniya becomes harder to jam but at the cost of reduced range and payload . The standard Molniya has a maximum range of approximately 50–60 km and a payload capacity in the 6.5–8 kg range, often carrying an RPG-7 warhead or TM-62 anti-tank mine .

An enhanced variant, the Molniya-13, was unveiled in June 2026 at the Belarus National Security Exhibition. It features a larger airframe, four electric motors, and a 13 kg payload capacity, more than doubling the payload of the base Molniya-2 .

Note on the claim: While open-source reporting confirms Russia is actively developing and fielding fiber-optic variants of the Molniya for combat evaluation , the specific claim of a "first fixed-wing fiber-optic UAV" being "an analogue of the Molniya with 50 km range and 6.5–8 kg payload currently being built for combat evaluation" is not directly corroborated by a single authoritative source in the search results. The closest evidence is the confirmed fiber-optic Molniya adaptation (already in use) and the baseline Molniya specifications matching those parameters .

Countermeasures: Physical Interception Is the Primary Defense

Fiber-optic drones cannot be jammed by electronic warfare, so physical destruction is the primary countermeasure . The current strategy relies on layered physical defenses, as no single scalable solution exists yet .

Small Arms and Shotguns

The Lowy Institute reports that shotguns are a field-proven option for shooting down fiber-optic drones . Ukrainian units also use dedicated fire teams with small arms for physical interception .

Anti-Drone Nets

Kharkiv authorities are deploying nets over the city's northern highway specifically to catch fiber-optic drones . NPR confirms netting is being used on a growing scale, with the Ukrainian government planning to install approximately 2,500 miles of drone nets along front-line routes by the end of 2026 . These nets physically entangle drones, stopping their propellers .

Cable-Cutting Systems

The Ukrainian company U-FORCE has developed the "Barrier UF" system, which physically cuts the fiber-optic tether, disconnecting the drone from its operator . It is deployed up to 500 meters from protected positions .

Interceptor Drones

Interceptor drones have emerged as one of the most cost-effective active countermeasures against drone threats . They are a kinetic solution that can engage fiber-optic drones without needing to detect their radio signals .

High-Tech Solutions in Development

AI-powered automated turrets equipped with radar and camera sensors are in development but are currently expensive and not yet widely deployed . NATO has also launched an innovation challenge to find scalable solutions for detecting, tracking, and neutralizing fiber-optic FPV drones .

Bottom line: No single countermeasure exists yet. The current strategy relies on layered physical defenses — nets, shotguns, cable-cutters, and interceptor drones — combined with concealment and dispersion of assets .