US European Command says it boarded the Marinera over alleged sanctions violations, a move that risks confrontation with Moscow

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The US has seized a Russian-flagged oil tanker in the Atlantic Ocean in a high-stakes operation that could risk confrontation with the Kremlin after Moscow reportedly dispatched a submarine to safeguard the vessel.

US European Command said on Wednesday that it had boarded the Marinera over alleged sanctions violations, bringing to an end a dramatic two-week pursuit that began in the Caribbean and concluded in the Atlantic.