In a statement to the OSCE, the UK used the latest Black Sea attacks to make a wider policy point: strikes on merchant shipping are no longer a narrow question of battlefield risk, but a direct challenge to civilian navigation, regional security and the operation of lawful trade. The statement opened with support for Bulgaria, Romania and Türkiye after attacks on civilian vessels over the previous 48 hours, and with condolences for seafarers killed or still missing. That framing is significant. By raising the matter in the OSCE, the UK signalled that the issue is not confined to Ukraine’s coastline. It now engages the security interests of other Black Sea participating States and raises the prospect of wider instability across the region’s shipping lanes.
According to the UK account, the Turkish-owned cargo vessel Royad Mammadov caught fire and sank on 5 October in Romania’s Exclusive Economic Zone while carrying corn from Izmail in Ukraine to Italy. Two crew members were killed and Romanian authorities rescued eleven others. The UK said that, in the early hours of 6 October, two more merchant vessels, Alfa Watan and Able, were hit by air and sea drones in Bulgaria’s Exclusive Economic Zone. Alfa Watan sank and its crew remained missing at the time of the statement. Eighteen sailors were rescued from Able, including two with serious injuries. The same day, a vessel carrying rapeseed oil was struck off Odesa, leaving one crew member dead and seven injured.
The statement also recorded the first such attack on shipping in Bulgaria’s Exclusive Economic Zone during the war, marking a clear widening of operational risk at sea. The UK commended Bulgarian and Romanian rescue services, along with the crew of the ferry Dioscuria, for assisting survivors, and said it would follow the official investigations closely. The government also pointed to a public announcement from the Russian Ministry of Defence on 5 October stating that Russian forces had struck two cargo vessels in the Black Sea. That placed the rescue operations, the casualty figures and the official Russian claim within the same policy frame.
On law, the UK’s position was direct. It told the OSCE that attacks which fail to distinguish between military objectives and civilian vessels, or which are expected to cause excessive incidental harm to civilians and civilian shipping when weighed against the anticipated military gain, may breach international humanitarian law and the UN Convention on the Law of the Sea. That is the key legal test in the statement. The issue is not only that merchant ships have been hit, but that the pattern of attacks may engage long-standing rules intended to protect civilians and preserve freedom of navigation. The UK’s conclusion was that the Russian Armed Forces must comply fully with international law.
The UK then widened the focus beyond the immediate casualties. Citing figures from Türkiye’s Chamber of Shipping, it said there have been 226 attacks on civilian and commercial vessels since the start of the war, with most of them occurring this year. The crews affected this week included Turkish, Indian and Azerbaijani nationals, underlining how quickly a Black Sea security incident becomes an international labour and consular issue. The commercial effects are also central to the government’s case. Repeated strikes raise insurance costs, increase the risk premium on shipping routes and constrain the movement of food cargoes. When vessels carrying corn or oil products are hit, the effect is felt not only by shipowners and ports, but by import-dependent markets further afield.
This is where the OSCE forum becomes especially relevant. The UK said the body exists to reduce misunderstanding, miscalculation and unintended escalation between participating States. Drone attacks on merchant vessels in the Exclusive Economic Zones of Bulgaria and Romania bring that risk much closer to states that are not parties to the war but are directly exposed to its spillover effects at sea. The statement therefore linked maritime safety to the wider European security picture. In the UK’s assessment, Russia’s war against Ukraine is not contained by Ukraine’s land borders. It is destabilising the broader OSCE area, and the latest incidents show that the pressure now extends into shipping lanes off the coasts of Bulgaria and Romania.
The closing section turned to ceasefire diplomacy. The UK noted that Russia’s Foreign Ministry ruled out a Black Sea ceasefire in August, while Ukraine has accepted a full, immediate and unconditional ceasefire. The Kremlin, the statement said, has rejected that position. London’s policy position is that the most reliable way to stop attacks on civilian shipping is for Russia to agree to a ceasefire and enter serious negotiations towards a just and lasting peace. Until that changes, the UK said it will continue to stand with Ukraine and with Black Sea partners in support of freedom of navigation and the safety of civilian crews.