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,

STORY: The seized oil tanker accused of sabotaging an undersea power cable and four internet cables now sits off Finland's coast.Finnish investigators said the ship that has been linked to Russia may have caused damage to the cables by dragging its anchor along the seabed,

NATO said on Friday it would boost its presence in the Baltic Sea after the suspected sabotage this week of an undersea power cable and four internet lines, while alliance member Estonia launched a naval operation to guard a parallel electricity link.