The French navy has boarded and seized a Russian oil tanker near Sicily in the Mediterranean Sea, the fifth such interception France has carried out against vessels accused of helping Moscow circumvent Western sanctions imposed over its war in Ukraine. The operation, which took place on Tuesday but was only announced later, targeted a tanker named the Deliver — a nearly 25-year-old vessel measuring approximately 275 metres in length and sailing under the flag of Cameroon.

Footage posted to social media by French President Emmanuel Macron showed heavily armed naval personnel rappelling from a helicopter onto the ship's deck, seizing control of the vessel mid-voyage. The Deliver is considered part of Russia's so-called "shadow fleet" — a collection of ageing, often poorly maintained tankers that sail under the flags of third countries to transport Russian oil and gas, allowing Moscow to sidestep the sanctions regime put in place by Western nations following the full-scale invasion of Ukraine in 2022.

Macron linked the operation to a similar interception carried out by the United Kingdom in the English Channel just over a week earlier, in which France provided support. That marked the first time Britain had moved against a shadow fleet vessel. Invoking a shared European resolve, Macron said the continent is "determined" to prevent sanctions from being undermined, adding: "We will do everything possible to increase the costs of the war for Russia and to make lasting peace in Ukraine possible."

Moscow has pushed back sharply against these actions. Russia's embassy in France described the latest seizure as "another case of piracy," a position consistent with the Kremlin's broader argument that such interceptions violate international maritime law. Western governments counter that the vessels are operating illegally by facilitating sanctions evasion.

The escalating campaign against the shadow fleet reflects a broader effort by European nations to tighten enforcement of their sanctions architecture, as evidence mounts that the fleet has allowed Russia to sustain oil export revenues that help fund its military operations in Ukraine. France has now led at least five such operations, while the Netherlands — despite having major port infrastructure — has not yet taken direct action against any shadow fleet vessels, a contrast that has drawn scrutiny in recent weeks.