Add Yahoo as a preferred source to see more of our stories on Google. A new video shows a forest in Ukraine covered in fiber-optic cables for unjammable drones. These drones have become an increasingly prolific countermeasure to electronic warfare.

Small drones controlled by fiber-optic cables have turned parts of the battlefield into webs, a Ukrainian special operator told Business Insider.

Constant intense electronic warfare in Russia's war against Ukraine has led to the rise of drones that are resistant to signal jamming. It's still early days, but these things could be game changers, drone operators say. These fiber-optic and artificial ...

Drones are everywhere these days, and plenty of people are creating their own to be the lightest and fastest in the air. You know the military is taking notes.

Fiber-optic cables have typically been used for smaller quadcopters. Now, the practice is being extended to larger fixed-wing drones.