The European Union has expanded the authority of its naval mission in the Indian Ocean, allowing it to intercept and inspect vessels suspected of being part of Russia’s so-called shadow fleet if they are believed to be sailing under false flags.
EU member states have granted Operation Atalanta—the bloc’s anti-piracy naval force operating off the Horn of Africa—the authority to carry out flag-verification inspections on ships suspected of using fraudulent registrations in the western Indian Ocean. The decision, announced by EU foreign policy chief Kaja Kallas, gives Atalanta powers similar to those already exercised by Operation Irini, the EU’s maritime mission in the Mediterranean.
Kallas revealed the expansion while confirming that Operation Irini boarded the sanctioned oil tanker MV South Star on July 20 after authorities suspected it was operating under a false flag. Emphasizing the EU’s determination to enforce sanctions, she stated that every unlawful shipment contributes to financing Russia’s war effort and that extending Atalanta’s mandate strengthens the bloc’s ability to curb such activities.
The new authorization significantly broadens the EU’s ability to monitor Russia’s shadow fleet, a network of tankers with complex ownership arrangements that has been used to transport Russian oil beyond the limits imposed by Western price-cap sanctions. Unlike Operation Irini, which focuses on the Mediterranean, Operation Atalanta patrols a much larger maritime area, including the Somali Basin, Gulf of Aden, Red Sea, Gulf of Suez, Gulf of Aqaba, and waters surrounding Oman. Established in 2008, Atalanta was the EU’s first naval mission and was originally created to combat piracy.
This mission operates independently of the EU’s ASPIDES naval operation, which is tasked with protecting commercial shipping in the Red Sea from attacks by Yemen’s Iran-backed Houthi movement.
The waters covered by Operation Atalanta are strategically important because they serve as a major route for tankers transporting Russian crude oil to buyers across Asia. To date, the European Union has sanctioned more than 600 vessels believed to be associated with Russia’s shadow fleet.
International maritime law generally prohibits warships from boarding foreign vessels on the high seas without legal justification. However, Article 110 of the United Nations Convention on the Law of the Sea permits inspections when there are reasonable grounds to believe a ship is either stateless or falsely displaying a national flag. While this does not provide unrestricted authority to stop all Russia-linked or sanctioned ships, the frequent use of fraudulent flag registrations by shadow fleet vessels provides a legal basis for such inspections.
The European Council has not yet released the detailed operational framework, engagement rules, or implementation guidelines outlining the precise scope of Atalanta’s expanded authority.
Previous enforcement efforts have already demonstrated tangible results. Investigations supported by Operation Irini prompted Cameroon to remove 39 ships from its maritime registry after authorities uncovered forged documentation and counterfeit registry websites that had been used to conceal the identities of shadow fleet tankers.
Russia has strongly criticized such maritime inspections. President Vladimir Putin has previously described these interceptions as acts of “piracy,” suggesting that the EU’s expanded naval mandate is likely to heighten tensions between Brussels and Moscow over the enforcement of sanctions at sea.
