NATO is launching a new mission to protect undersea cables in the Baltic Sea region after a string of incidents that have heightened concerns about possible Russian activities, the alliance’s leader said.

The Baltic Sea operation in the region bordering Russia comes as European fears of sabotage mount after a string of disruptions to underwater cables.

Nato has launched a new mission to increase the surveillance of ships in the Baltic Sea after critical undersea cables were damaged or severed last year. Nato chief Mark Rutte said the mission, dubbed "Baltic Sentry", would involve more patrol aircraft, warships and drones.