France seized sanctioned Russian oil tanker with UK help, Macron says

France intercepted a sanctioned oil tanker suspected of being part of Russia’s so-called shadow fleet on Sunday with UK support, French President Emmanuel Macron has said.

Officers boarded the Tagor in the Atlantic, which maritime authorities said had been flying a false flag when it was detained around 400 nautical miles west of Brittany.

“It is unacceptable for ships to circumvent international sanctions, violate the law of the sea, and fund the war that Russia has been waging against Ukraine,” Macron wrote on X.

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A British helicopter provided support during the operation, the UK Ministry of Defence (MoD) told the BBC.

The Kremlin said the “illegal” seizure was “bordering on international piracy”.

“Russia is taking measures to ensure the safety of its cargo,” said spokesman Dmitry Peskov.

Moscow has been operating a “shadow fleet” of tankers with obscure ownership structures to evade international sanctions imposed on its oil exports since launching its full-scale invasion of Ukraine in 2022.

It is the fourth ship suspected shadow fleet vessel that France has boarded since September 2025.