The President of Finland, Alexander Stubb, has admitted there is no certainty about who is responsible for the severed cables in the Baltic Sea. Local media suggest that the authorities might be concealing Russia's involvement.

Cables deep under the Baltic Sea keep getting damaged - here is what Nato is doing to protect them - Nato is deploying eyes in the sky and on the Baltic Sea to protect cables and pipelines

NATO is ratcheting up its guard against suspected attempts to sabotage underwater energy and data cables and pipelines that crisscross the Baltic Sea.