Russia's "Baltic Jammer" is probably disrupting GPS in the Baltic Sea region. The disturbances occur primarily over the Baltic states as well as over Poland and Sweden.

Russia's interference with GPS signals could have defensive reasons. It is possible that the signals sent by the alleged “BalticJammer” are precautions against possible Ukrainian drone attacks. However, there is “no acute danger” for pilots and ship captains whose GPS systems temporarily fail because they still use other navigation systems.