Many of the drones Russia uses in its war against Ukraine are not flown by radio alone. Instead, they are guided through cables that can stretch for tens of kilometres, a setup that makes them harder to jam electronically. That reliance on a physical connection has now become a vulnerability.
According to a report from New Scientist, Ukraine has begun deploying a razor fence intended to slice through those control cables. When a drone flies into the fence, the cable is cut, severing the operator's link and bringing the drone down. The tool is a straightforward, low-tech answer to a sophisticated battlefield problem.
The report describes the fence as a new defensive measure, though it does not provide details on how widely it has been deployed or how effective it has proven in combat. Still, the approach highlights how physical infrastructure can be used to counter drones when electronic warfare is not enough.