The attacks are causing concern among analysts, as they are now taking place within the territorial waters of NATO member-states
Repeated drone incidents in the Black Sea are raising alarm across NATO, as two tankers burst into flames within Romanian territorial waters, leaving eight sailors missing. The vessels were anchored near the Sulina Canal, a strategically vital maritime passage close to the Ukrainian border that connects to inland Danube shipping routes. Specifically, on Thursday morning (10/15/2026), at least eight crew members were missing as the vessel "Wine Trader" (flying the flag of San Marino) and the vessel "Yara J" (flying the flag of Comoros) caught fire while anchored in the Black Sea near the Sulina Canal, a vital waterway near the Ukrainian border leading to inland shipping routes on the Danube.
Official statement from Romania
The country's Ministry of Defense announced that overnight into Thursday it "detected a group of aerial targets near Snake Island," an uninhabited island off the Romanian coast. According to the statement, two F-18 fighter jets scrambled to intercept the situation. An additional drone was detected in national airspace, southeast of Sulina, over Romanian territorial waters. The incident prompted authorities to issue an emergency warning to citizens living along the border shortly before 5:00 AM. According to the ministry, at least six separate instances of airspace violation by drones occurred over the past week.
What happened in Bulgaria
The tanker fires occurred two days after similar incidents involving two cargo ships in Romania's southern neighbor, Bulgaria. The vessels were sailing near Bulgarian territorial waters along the last remaining maritime commercial route providing Ukraine with access to international markets. Bulgarian Prime Minister Rumen Radev stated that crews have been unable so far to confirm that Russia is behind the attacks. However, authorities will tow the remaining wreckage and search for "drone debris." "Who is behind the drone attacks? We have our hypotheses," Radev stated Thursday upon arriving at an EU summit in Brussels. "We do not believe Ukraine would attack its own ships and crews. There is no logic in that. Therefore, the results of this attack benefit Russia. However, we have no solid proof that the drones were Russian."
Concern in NATO
The attacks are causing concern among analysts, as they are now taking place within the territorial waters of NATO member-states. "This is clearly an escalation, following last month's incidents in western Russia and the Black Sea," said Sandu Valentin Mateiu, a former admiral in the Romanian Navy and military analyst. "They have violated the rules of maritime law and ignored the strict conditions under which a civilian vessel may be attacked." Mateiu explained that vessels must constitute legitimate military targets—for instance, by carrying weapons or violating a naval blockade. Furthermore, an explicit warning must precede any attack. According to him, drone incidents have gradually expanded: from waters near the Ukrainian port of Odesa, to Romania's exclusive economic zone, then to ships bound for Romania near Bulgaria, and finally, into Romania's own territorial waters. "This constitutes a severe violation of a NATO country's sovereignty," Mateiu stated. Tomas Alexa, maritime security analyst at shipping risk consultancy Ambrey, reported that strikes on vessels inside the territorial waters of NATO nations represent "a significant additional layer of threat for vessels operating in the region." Maritime security firm Vanguard advised the shipping industry that the Wine Trader "issued a distress call, initiating a search and rescue operation involving a rescue vessel and a helicopter." Of the ship's 12 crew members, four were reported safe, while the remaining eight stay unaccounted for. On the Yara J, "the crew managed to extinguish the fire, and all members were reported safe," according to Vanguard.
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