Earlier this month, NATO began a new mission dubbed "Baltic Sentry" which included frigates, maritime patrol aircraft and a fleet of naval drones to provide "enhanced surveillance and deterrence" in the Baltic Sea which the transatlantic alliance says is to protect undersea cables and pipelines.

Following damage to an undersea cable in the Baltic Sea, Latvia has made initial progress in the search for the cause. During investigations at the

Sweden said Sunday that it seized a vessel suspected of damaging a fiber-optic cable under the Baltic Sea that links the country to Latvia, in what authorities are investigating as an act of "aggravated sabotage.