France Intercepts Sanctioned Russian Oil Tanker in Atlantic

French naval forces boarded the Russian oil tanker Tagor on June 1, 2026, more than 400 nautical miles west of the tip of Brittany in the Atlantic Ocean. The vessel, sailing from Murmansk, Russia, was suspected of flying a false flag to circumvent international sanctions. France diverted the tanker at the prosecutor's request with UK support under international law.

Tagor tanker interception

• ▪The Tagor was sailing from Russia when intercepted
• ▪The Tagor was subject to international sanctions
• ▪The French Navy boarded the oil tanker Tagor on June 1, 2026
• ▪The Tagor was suspected of flying a false flag
• ▪The intercepted oil tanker was coming from Murmansk, Russia
• ▪An examination of the Tagor's documents confirmed suspicions regarding the irregularity of the flag flown
• ▪The French Navy intercepted the oil tanker more than 400 nautical miles west of the tip of Brittany
• ▪The Tagor interception operation took place in the Atlantic Ocean on the high seas
• ▪The Tagor was diverted at the request of the public prosecutor in accordance with international law

Shadow fleet enforcement

• ▪Dozens of sanctioned ships linked to Russia continue to cross UK waters according to shipping data
• ▪Emmanuel Macron stated that ships circumventing international sanctions finance the war that Russia has been waging against Ukraine for more than four years
• ▪France has vowed to obstruct ships linked to Russia's sanctioned shadow fleet that pass through French waters
• ▪British Prime Minister Keir Starmer announced in March 2026 that Keir Starmer had granted permission for the UK military to board ships belonging to the shadow fleet

UK-France coordination

• ▪The Tagor interception operation was conducted with the support of the United Kingdom
• ▪The Tagor interception operation was conducted with the support of several partners in strict compliance with the law of the sea

Perspective of France and the United Kingdom

• ▪British Prime Minister Keir Starmer announced in March 2026 that Keir Starmer had granted permission for the UK military to board ships belonging to the shadow fleet
• ▪Emmanuel Macron stated that ships circumventing international sanctions finance the war that Russia has been waging against Ukraine for more than four years