On the morning of March 20, the French Navy intercepted the tanker Deyna, identified as part of the Russian shadow fleet, in the Mediterranean Sea. President Emmanuel Macron announced the seizure on X, stating that the war in Iran would not distract France from supporting Ukraine. Macron emphasized that vessels circumventing international sanctions and violating maritime law profit from war and fund Russia’s military actions—a practice France vows to stop.
The Deyna was sailing under a Mozambique flag from Murmansk and was suspected of using a “false flag.” The operation was conducted alongside British allies. This marks the second seizure of a tanker carrying Russian oil within a week (following Sweden’s detention of the Sea Owl) and the second such incident involving the French Navy this year.
Analytical summary: The seizure of the tanker in March 2026 indicates that NATO countries have entered an active phase of “hunting” Russia’s shadow fleet in open waters. Deploying naval forces to verify the registration of vessels under suspicious flags represents a significant escalation beyond mere economic sanctions. For Moscow, this creates a critical logistical bottleneck: the Mediterranean is becoming a “gray zone” where any tanker lacking transparent insurance or a valid flag faces the risk of arrest. The joint Franco-British operation underscores Western resolve to cut off the Kremlin’s financial lifelines, despite other global distractions.