Most attack drones are controlled by radio signals. Radio signals can be jammed, intercepted, or spoofed — and for years, electronic warfare has been one of the primary tools that advanced militaries use to neutralise drone threats. A fiber-optic drone removes this vulnerability entirely. Instead of a radio link, a physical cable no thicker than dental floss connects the operator directly to the drone, carrying real-time video and control signals through light rather than radio waves. There is nothing for a jammer to catch.

The drone is typically a small, commercially available FPV (first-person view) frame fitted with a shaped-charge explosive — often anti-armour warheads originally designed for rocket-propelled grenades. The operator watches through a live feed from the drone’s camera and flies it manually to the target. Because the cable transmits data rather than radio, it is invisible to spectrum monitoring systems. Because the drone is small and flies low and fast, it is extremely difficult to detect on radar.

Robert Tollast, a drone expert and researcher at the Royal United Services Institute in London, described the threat directly. In fields across Ukraine, he noted, fiber-optic cables have become so common that front-line towns are coated in shimmering threads resembling massive spiderwebs. Cables extending as far as 50 kilometres have been recorded. The technology is not new — it first appeared on the Ukrainian battlefield in spring 2024 — but it is now arriving in Lebanon with full operational maturity.

Hezbollah announced it began using fiber-optic guided drones for the first time on March 2, 2026, at the start of the latest round of fighting. An Israeli military official told AP that Israel believes the drones are assembled locally in workshops across southern Lebanon, requiring little more than an off-the-shelf drone frame, a small amount of explosives, and transparent wire available on the consumer market. They are not being imported as finished weapons — they are being manufactured in volume.

The drones have been deployed primarily against Israeli soldiers operating inside Lebanon’s declared security zone and against towns on the northern Israeli border. Hezbollah has published attack videos through its Al-Manar TV station and social media channels showing strikes on Israeli tanks, Namer armoured personnel carriers, and engineering vehicles. The IDF has confirmed dozens of drone-related injuries in recent weeks.

The deadliest confirmed strike came on April 26, when a fiber-optic drone hit Israeli soldiers repairing a tank in the southern Lebanese town of Taybeh. Sgt. Idan Fooks, 19, was killed and six others wounded, four seriously. A second drone was fired moments later as an Israeli Air Force Black Hawk helicopter arrived to evacuate the casualties — the drone detonated just metres from the aircraft. A third soldier later died of wounds. The incident marked the first fatal FPV drone strike on Israeli forces in this round of fighting.

Smoke rises over the southern Lebanese village of Taybeh near the border, as seen from Upper Galilee. The April 26 fiber-optic drone attack that killed Sgt. Idan Fooks occurred in this town. Photo: AFP / Arab News.

The gap in Israel’s preparedness is not a surprise failure — it is a documented institutional one. Haaretz reporting confirms that fiber-optic guided drones are not a new concept for those involved in Israeli defence procurement. The concept emerged more than a decade ago, and these drones became a defining feature of the Russia-Ukraine war over two years before appearing in Lebanon. The IDF watched Ukraine and drew no operational conclusions.

Ran Kochav, a former head of the Israeli military’s air defence command, stated the problem plainly: Israel spent years strengthening its systems against rockets and missiles, and drones were not seen as a top priority. He said Israel is failing in its attempts to defend against the fiber-optic variant specifically. The IDF’s initial assessment was that Hezbollah’s range was limited to a few kilometres. That assessment was wrong — IDF analysts later discovered launches occurring from up to 15 kilometres away.

On April 11 — weeks into the current conflict — Israel’s Defence Ministry Directorate of Defense Research and Development issued a public tender calling for technological solutions to the fiber-optic drone threat. The timing is damning: a public request for bids, issued after soldiers were already being hit, two years after such systems first appeared in Ukraine. Independent analyst Jakub Janovsky observed that a kilometre of fiber-optic cable costs around $30 when bought in bulk — meaning range is cheap to extend, and Hezbollah has every incentive to do so.

Russia pummels Ukraine almost nightly with Shahed long-range drones — a design originally from Iran. Ukraine responded by developing fiber-optic FPV drones to counter Russian electronic warfare. Russia adopted the technology in turn. By the time fiber-optic drones appeared on the Ukrainian battlefield in spring 2024, both sides were producing them at scale, refining range, payload, and operator training in live combat conditions. The result is a mature, battle-tested system arriving in Lebanon as a finished weapon concept.

The technology transfer route is not fully established in open sources. What is clear is that Hezbollah has built local production capability rather than importing finished drones — the components are commercially available globally, and the assembly knowledge has been widely disseminated through open-source Ukrainian and Russian drone communities. Kochav stated directly that Israel should have assumed Iranian allies would follow Russia’s lead and adopt the technology.

i24NEWS analysis raises the possibility that Ukraine could share counter-drone expertise with Israel as part of a closer alignment between the two countries — a strategic reversal of the technology flow. The irony is significant: the same conflict that generated the drone threat may also generate part of the solution.

In the absence of a technological solution, Israeli forces have resorted to physical countermeasures. Nets and cages have been added to military vehicles — mirroring exactly the improvised armour that Ukrainian and Russian ground forces adopted in 2022 and 2023. Some Israeli combat units have independently begun hanging physical nets over positions, windows, and doors in the hope that a drone will tangle in the material before its warhead detonates. These are workarounds, not solutions.

Kochav noted that Israel does already possess relevant detection technology — systems that track changes in light, identify signals, and recognise the acoustic signature of drone propellers. The problem is that these systems have not been widely deployed along the northern border. The capability exists; the deployment decision was not made.

Netanyahu has reportedly instructed senior military officials to accelerate the development of technological countermeasures. Northern Command is simultaneously pushing for greater operational flexibility to conduct deeper strikes against Hezbollah drone-operating cells — pushing them north of the Litani River and into the Beqaa Valley, beyond effective drone range. That push requires diplomatic clearance from Washington that has not yet been granted.