Black Sea Ship Attacks Spread From Bulgaria to Romanian Waters

The latest emergency began off Bulgaria's Black Sea coast on October 13, when drones struck two merchant ships. One sank, prompting rescue operations, Prime Minister Rumen Radev said, according to CBC News.

It was not an isolated incident. Deutsche Welle described the strikes as the second round of attacks on merchant ships off Bulgaria within a week. By October 14, Arab News reported that four ships had been struck over that period and two had sunk.

On October 13, rescuers evacuated all 15 crew members from one of the vessels, according to South China Morning Post. Separately, eleven sailors were reported missing following the sinking, the Financial Times reported.

Early coverage conflicted over which ship sank. The Hindu identified the sunken vessel as the Ukrainian-owned Chelsea 3. But NDTV reported that the Ukrainian-owned vessel was struck while another ship sank farther north. On October 14, The Independent identified the sunken ship as the Guinea-Bissau-flagged Dignity.

Bulgaria summoned the Russian ambassador, according to BBC World, which reported that Radev suspected Russia was behind the attacks. Bulgaria also sought NATO and European Union assistance, Express & Star reported.

On October 14, Bulgaria said Russia was likely responsible for the week's attacks but acknowledged it could not prove Moscow's culpability, according to Arab News. Search operations continued, with eleven sailors still missing, according to Times of India.

On October 15, the emergency spread to Romanian territorial waters, where two chemical tankers caught fire. Deutsche Welle reported that the fires followed sightings of Russian drones in Romanian airspace. The Independent said Romania's naval authority had received an emergency alert from the San Marino-flagged tanker Wine Trader.

Rescuers in Romania were searching for missing crew on October 15, but reports differed on the number. CNN Brasil reported seven missing from one of the two chemical tankers, while ABC reported eight missing after a fire aboard a San Marino-flagged ship.

Accounts also differed on how firmly the fires had been linked to drones. Al Jazeera reported that authorities were investigating possible drone involvement. Global News, however, reported that Romanian President Nicusor Dan said both ships had been struck by drones, while declining to identify them as Russian.

The distinction matters: suspected Russian responsibility is not the same as established attribution. Bulgaria has acknowledged its lack of proof, according to Arab News, while Romania's investigation remained open, according to Euronews.

The immediate priorities are the searches for missing sailors and clarification of the Romanian casualty count. The latest Romanian rescue reports still described seven people as missing, according to Infobae.

Investigators must also establish what caused the tanker fires and who was responsible. Bulgaria's request for NATO and EU assistance remains another issue to follow: Ars Technica reported that NATO may redeploy anti-drone defences, but the supplied coverage does not establish that a deployment has been agreed.