Unidentified drones can carry out spying activities in Norway. But what exactly are they looking for?

Drones and Russians in Norway make headlines. But what is their purpose: tourist photos or espionage?

Recently, there have been several drone sightings in Norway. Seven Russians were also arrested for illegally piloting a drone in the country.

Russian intelligence is likely to be involved in drone cases, believes Tormod Heier, a professor at Norwegian Defense College.