The ‘Baltic Beast’ is at it again. Mysterious – or not so mysterious – GPS signal disruption has become a growing problem for civilian air traffic, not just in the Baltic but also the Black Sea and the Eastern Mediterranean. It is clear that Russia is behind it, but why?

Airplanes have, while in flight, encountered signals designed to interfere with their GPS and other systems, whether by jamming them or spoofing, making them think they are somewhere else from their actual location.