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Russia's unjammable drones are causing chaos. A tech firm says it has a fix to help Ukraine fight back.

Fiber-optic drones are highly dangerous, as they can't be jammed with traditional electronic warfare and are difficult to detect.

Russian forces are using explosive-packed drones connected to their operators by fiber-optic cables to deliver unjammable precision strikes on Ukrainian troops and military equipment, and Kyiv is looking for a fix to fight back. Kara Dag, for instance, is an American-Ukrainian technology company that's developing software and hardware to defend against Russian drones for the military and working on a solution, but it's still early days. The introduction of fiber-optic drones into battle — and Ukraine's subsequent efforts to counter them — underscores how both Moscow and Kyiv are constantly trying to innovate with uncrewed systems before the enemy can adapt, a trend that has been evident throughout the war.

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