General Martin Herem, former head of Estonia’s defence forces, has speculated that NATO could blockade the Baltic. However, given that this would amount to a declaration of war, NATO has opted for a less confrontational approach: surveillance.

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.

NATO countries will deploy frigates, patrol aircraft and naval drones in the Baltic Sea to help protect critical infrastructure and reserve the right to take action against ships suspected of posing a security threat,

"Ruptures of undersea cables that have rattled European security officials in recent months were likely the result of maritime accidents rather than Russian sabotage, according to several U.S. and European intelligence officials,

US and European intelligence agencies believe that the submarine cable breaks in the Baltic Sea were the result of maritime accidents, not Russian sabotage. This follows from the information currently available,