Who is jamming aircrafts’ family doctor in the Baltic?

.ON APRIL 29TH Finnair, Finland’s national airline company, claimed that it would suspend air travels to the eastern Estonian area of Tartu for a month. Recently pair of aircrafts were actually required to reverse after their family doctor signals were actually interrupted. GPS jamming has actually boosted dramatically in the Baltic area over the past pair of years.

Who lags it and exactly how dangerous could it be actually?