Who is sticking airliners’ general practitioner in the Baltic?

.ON APRIL 29TH Finnair, Finland’s nationwide airline company, mentioned that it will put on hold tours to the asian Estonian city of Tartu for a month. Recently two aircrafts were required to turn around after their GPS signs were actually disrupted. Family doctor jamming has improved sharply in the Baltic region over recent pair of years.

That is behind it and just how unsafe could it be actually?