In just three months, three incidents of damage to Baltic Sea underwater cables have taken place. While accidential cable slices are common, the cluster raises suspicion.

The Silver Dania cargo ship, a Norwegian vessel with an all-Russian crew, was boarded at the request of Latvian authorities with the help of coastguard, police said.

Estonia’s defence minister proposed on Wednesday that shipping companies may have to pay a fee to use the Baltic Sea, one of the world’s busiest shipping routes, to cover the high costs of protecting undersea cables following a series of breaches,