Romania accused Russia of attacking and sinking a cargo ship off its Black Sea coast with a drone on Friday, killing one crew member and leaving three others missing. The Comoros-flagged "Khoryv" cargo ship was hit 13 nautical miles (24 kilometers) outside the Romanian port of Constanta. Romanian President Nicușor Dan called it "a new example of the tragic consequences of Russia's aggression against Ukraine." Over the past two weeks, at least seven cargo ships have been attacked by drones in the Black Sea region, with 30 crew members dead or missing, raising concerns about an escalation of the Russia-Ukraine war. NATO announced on Tuesday that it would send more maritime patrol aircraft, radar systems, and drones to the Black Sea.