Brussels: European Commission President Ursula von der Leyen condemned drone strikes on commercial vessels in Bulgaria’s exclusive economic zone on 6 October 2026, putting Black Sea shipping at the top of the EU security agenda. She called the attacks “unacceptable” and said “commercial ships, and innocent crews, are being targeted, with lives already lost at sea”.

Two merchant vessels came under drone attack off the Bulgarian coast. One ship sank and its crew was reported missing, while the second suffered damage. Bulgarian Prime Minister Rumen Radev described the strike as a gross violation of international law, and the International Maritime Organization also condemned the renewed assaults on civilian merchant ships.

Investigators have not yet established responsibility, and von der Leyen stressed that the circumstances remain under investigation. Ukraine’s president blamed Russia, but the EU institutions have so far kept their language to the act itself rather than naming a perpetrator. That caution matters for any legal or sanctions follow-up, and it shapes how Black Sea shipping companies assess the risk of each new voyage.

The incidents hit the EU where it is most exposed. Bulgaria is a member state with a Black Sea coastline, and its exclusive economic zone gives it sovereign rights over resources and navigation safety. An attack inside that zone is therefore an attack on waters that the Union treats as its own maritime frontier, and Black Sea shipping now carries a visible security premium.

Commercial consequences could follow quickly. Insurers price war risk by the day, and a sunk vessel with a missing crew pushes premiums up for every operator on the route. Grain, fertiliser and fuel cargoes pass through these waters, so higher costs for Black Sea shipping would reach European ports, farmers and consumers within weeks.

Brussels has several tools at its disposal to protect Black Sea shipping. The Commission can coordinate maritime surveillance through its transport and security services, member states can share naval and coast guard information, and the Council can add listings to the existing Russia sanctions framework if evidence points that way. Foreign ministers meet next week, and Bulgaria is expected to ask for a clear political signal.

Sofia, for its part, faces a practical test. A modest navy and a long coastline leave little room to escort civilian traffic, so Bulgarian officials will look to allies and to EU funds for detection and response capacity. The Commission’s transport policy pages set out the maritime safety and security framework that any such effort would build on, while the International Maritime Organization remains the forum for rules on crew protection at sea.

The sequence of events will shape the autumn debate. Leaders gather in Brussels on 15 and 16 October, and they will weigh whether the Black Sea attacks justify a standing EU maritime security mission in the region. Whatever they decide, the strikes have shown that Black Sea shipping is no longer a distant concern for the Union but a live test of its ability to protect member state waters and the sailors who work in them.