The Economist explains

Who is jamming airliners’ GPS in the Baltic?

Russia seems to be the culprit, but it may be inadvertent

 Finnair Airbus aircraft climbing after departure at Helsinki-Vantaa airport.
Photograph: Alamy

ON APRIL 29TH Finnair, Finland’s national airline, said that it would suspend flights to the eastern Estonian city of Tartu for a month. Last week two planes were forced to turn around after their GPS signals were disrupted. GPS jamming has increased sharply in the Baltic region over the past two years. Who is behind it and how dangerous could it be?

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