The French navy has intercepted and boarded an oil tanker linked to Russia and subject to international sanctions, an operation confirmed by French President Emmanuel Macron, who described the move as part of efforts to enforce restrictions on Moscow's energy exports.
In a post on X, Macron said the operation took place in the Atlantic Ocean on the high seas and involved cooperation with several partners, including the United Kingdom. He stressed that it was carried out in accordance with international maritime law.
?It is unacceptable for ships to circumvent international sanctions, violate the law of the sea, and finance the war that Russia has been waging against Ukraine for more than four years,? Macron said, also confirming that the vessel involved was the tanker Tagor.
According to the Maritime Prefecture of the Atlantic, the intervention occurred more than 400 nautical miles (around 740 kilometers) west of Brittany. The ship had departed from Murmansk, Russia, and was suspected of operating under a false flag.
Officials said boarding teams inspected the vessel and reviewed documentation, which confirmed irregularities regarding the flag it was flying. Following the inspection, and at the request of the public prosecutor, the tanker was diverted under international legal procedures. The prefecture did not initially identify the ship by name.
The operation is part of a broader effort by France and its partners to target Russia's so-called 'shadow fleet,? a network of aging tankers used to continue oil exports despite Western sanctions imposed after the 2022 invasion of Ukraine. These vessels often operate through complex ownership structures, shell companies, and frequently changing flags to conceal their origins.
France and the United Kingdom have both pledged to step up action against such ships passing through their waters. British Prime Minister Keir Starmer announced earlier this year that the UK military had been authorized to board vessels suspected of belonging to the shadow fleet, although reports indicate that sanctioned ships continue to transit British waters.
Further details provided by Ukrainian military intelligence describe the Tagor as carrying Russian crude oil and petroleum products and being listed under sanctions by the European Union, the United Kingdom, and Ukraine.
Macron has previously emphasized that France has increased maritime inspections in recent months, including operations in late 2025 and early 2026, as part of a wider campaign to disrupt sanctions evasion networks at sea.
The shadow fleet itself is widely understood to rely on older tankers operating outside standard regulatory frameworks, allowing Russia to maintain significant portions of its oil exports despite international restrictions. Western officials and Ukraine have repeatedly called for stronger legal mechanisms to seize such vessels and potentially repurpose their cargo for European security needs.
A French court earlier this year also handed a one-year prison sentence in absentia to a tanker captain linked to a suspected shadow fleet vessel, following a separate incident in which the navy intervened after failing to stop the ship in 2025.
Despite these enforcement actions, maritime data indicates that numerous sanctioned vessels connected to Russia continue to operate and cross European waters, highlighting ongoing challenges in fully enforcing the restrictions.
