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

Ships face new tax to sail through Baltic Sea to protect underwater cables from Putin sabotage - Underwater sensors may also be installed to detect attempts to damage cables and pipelines

After a series of suspected undersea cable cuttings, NATO has launched a new surveillance and deterrence mission to protect critical infrastructure under the Baltic Sea.