France seizes Russian shadow-fleet tanker Tagor in Atlantic — third interception in recent months

On 1 June 2026, the French Navy intercepted the Tagor, a sanctioned oil tanker operating under a false flag and departing from Murmansk, approximately 400 nautical miles off Brittany's coast, with UK cooperation. France has called for a more robust Western strategy to intercept vessels transporting Russian oil in violation of sanctions. This is the third known shadow-fleet seizure in recent months and signals that EU member states are operationalising sanctions enforcement on the high seas. Shipping, trade-finance, and commodities counsel should note that false-flag and fraudulent-documentation risks are being actively interdicted; due-diligence obligations and flag-verification steps need to be embedded in transaction checklists.