NATO believes that Russia mined critical EU underwater infrastructure in the North Sea, - The Times

Over the past ten years, more than 160 non-military Russian vessels have carried out 945 suspicious actions in the North Sea

At least 749 of the 945 suspicious maneuvers occurred within one kilometer of pipelines in the North Sea. Another 72 suspicious activities occurred near electricity cables, and the remaining 124 occurred in areas where telecommunication cables were laid.

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