This map shows where Russia is currently attacking GPS signals in the EU.
According to this brilliantly researched article from Peter MΓΈller, Russia has a classified weapons system called Tobol, which is jamming GPS satellites from a base in Kaliningrad.
By using photos and articles from before the war, he has managed to piece together a surprisingly clear picture of what the Russians are doing.
(In Danish but translating it is absolutely worth it.)
@randahl What surprises me is why the West isn't doing the same. Tit for tat. In fact, the West could easily disable their GLONASS network for huge swaths along the border.