The Ukrainian military is testing new drones using fiber optics on the front lineagainst Russian forces.

The low-flying drones are tied to the ground via thin fiber-optic cables that unwind as the drone flies farther from the controller.

Unlike radio-controlled drones, fiber-optic drones cannot be jammed by opposing forces using "electronic warfare."

The cable transmits a high-quality image back to the ground, right up to the moment of detonation.

"These drones can fly up to 60 kilometers per hour, perform maneuvers, and within a range of 10 kilometers, the fiber does not break," says Serhiy Beskrestnov of the Ukrainian military.