Russian Drones Strike Two Civilian Vessels in Bulgaria Exclusive Economic Zone Marking First Attack in NATO Member Black Sea Waters

Analysis
Commercial shipping in Bulgaria's exclusive economic zone is now a combat area for insurers, flag states and NATO coastal governments, and this strike, paired with a ship hit off Romania the day before, points to a widening campaign against Black Sea merchant traffic. Sofia is unlikely to formally attribute the October 6 strikes to Russia by October 31, because Radev's "Russian or Ukrainian" framing is a deliberate hedge and Bulgaria lacks both forensic evidence and political appetite for rapid attribution. Attribution sourcing is thin: reporting largely tracks Radev's own remarks, and convergence on the strike facts does not extend to the perpetrator. Confidence is high, based on that convergence and broad official acknowledgment, though forensic results have not appeared and the Alfa Watan toll may rise. Ukrainian drones hitting Russia-linked vessels, or stray munitions, could also explain the strikes. Formal attribution would trigger NATO Article 4 consultations, while continued ambiguity leaves insurers and shippers without clear routing guidance.