France intercepts Russian tanker in Atlantic over sanctions evasion

French naval forces boarded the Tagor more than 400 nautical miles west of Brittany and ordered the sanctioned tanker toward an anchorage off northwestern France, turning Europe’s sanctions policy into a live maritime stop. The vessel had sailed from Murmansk, and French officials said the operation had British support. Emmanuel Macron posted video of the boarding and said it was unacceptable for ships to circumvent international sanctions, violate the law of the sea and finance Russia’s war in Ukraine.

French maritime authorities said inspectors reviewed the ship’s papers and found irregularities in the flag it was flying, reinforcing suspicions that Tagor belonged to Russia’s shadow fleet and may have been sailing under a false registration. That matters because France framed the operation as lawful under the law of the sea, after documentation problems gave its navy a basis to stop the vessel on the high seas rather than simply denounce it from afar.

Moscow responded with a sharp warning. Kremlin spokesman Dmitry Peskov called the interception illegal and said it bordered on “international piracy,” a formulation that turns a maritime inspection into a diplomatic test of how far European states can push before Russia treats the move as escalation.

The larger signal is that France appears to be building a pattern, not staging a one-off show of force. Officials said this was the fourth sanctioned tanker the French have intercepted, after the Deyna was detained in March and later released in April once a fine was paid. The European Union’s 19th sanctions package, adopted in October 2025, said the shadow-fleet list had reached 557 vessels, showing that Europe’s crackdown is moving from declarations and blacklists to direct enforcement at sea.