Estonia has ramped up its defensive measures in the Baltic Sea following allegations of Russian sabotage targeting critical undersea infrastructure. In response to the suspected damage to the Estlink 2 power cable,

As they plied the gray, icy waters of the Baltic Sea west of Russia on Thursday, the crew of the Estonian minehunter EML Sakala kept a careful eye on any vessels slowing down suspiciously or suddenly changing course.

Estonia said it would set aside €100 million ($103 million) for a new gas-fired power plant to boost energy security after repeated damage to subsea electricity connections.

Incidents of suspected sabotage of undersea cables and pipelines are prompting countries to step up security measures. Estonia's navy has launched an operation to try to counter sabotage, after cables were damaged in December.