(Wired) – In Russia’s war against Ukraine, electronic warfare, including signal-jamming, anti-drone weapons, and innovative protections for critical military systems, has become a key piece of the conflict.

EDM4S—or Electronic Drone Mitigation 4 System—is a portable electronic-warfare weapon from Lithuania. Point the EDM4S at a hovering uncrewed aerial vehicle (UAV) and pull the trigger: The drone should lose contact with its operator and fall inertly from the sky.

Hundreds of EDM4S systems have been donated to Ukraine over the past two years. They are just one weapon in an unseen, and under-appreciated, battle for control of the electromagnetic spectrum. Powering this battle is a furious arms race. (Read More)