After Western powers imposed sanctions on Russian oil, they've accused Moscow of secretly operating tankers to circumvent the bans. Now, the EU is raising tensions as it seeks to stop the ships operating in the Baltic.

Russia detained a Greek-owned oil tanker on Sunday after it left an Estonian Baltic Sea port, the Estonian Foreign Ministry said, adding it had alerted NATO allies to the incident.

Michal said the Estonian Navy had no plans to board the suspect tanker, which then sailed into Russian waters, escorted by the Su-35 and an Estonian patrol boat. Estonia detained another shadow fleet tanker,