France has deployed a maritime patrol aircraft to Romania following a series of attacks on civilian vessels near NATO territory. The escalating threat has prompted closer cooperation between Romania, Bulgaria and Turkey, raising questions about maritime security and the protection of Europe’s eastern flank.

A series of drone attacks on commercial shipping in the western Black Sea has brought the consequences of Russia’s war against Ukraine increasingly close to NATO territory, prompting additional military surveillance and renewed regional defence cooperation.

France has temporarily deployed an Atlantique 2 maritime patrol aircraft to Romania, while NATO members bordering the Black Sea are strengthening arrangements to monitor shipping routes, identify airborne threats and protect critical infrastructure.

The French aircraft began operating from Romania’s Mihail Kogălniceanu airbase on 18 October and is scheduled to continue reconnaissance missions until 6 November.

Its deployment follows repeated attacks on merchant vessels near Romania and Bulgaria, both members of NATO and the European Union.

At least eight cargo ships have been struck in the region during October, with approximately 34 sailors reported dead or missing, according to figures reported by Reuters on 27 October.

The incidents have transformed commercial maritime security into an increasingly urgent issue for European defence planners.

Commercial vessels enter the conflict zone

The latest escalation has centred on shipping routes serving Ukraine’s Danube ports and commercial traffic passing through the western Black Sea.

Russia’s attacks on Ukrainian maritime infrastructure have increased the importance of alternative export routes, including those connecting the Danube to international shipping lanes.

However, recent incidents demonstrate that geographical proximity to NATO territory does not necessarily provide commercial vessels with protection from the effects of the conflict.

On 23 October, a drone struck a Comoros-flagged cargo vessel near the Romanian port of Constanța.

According to maritime security company Ambrey, the vessel was hit approximately 16 nautical miles east of the port and subsequently capsized.

One crew member was reported dead, nine were rescued and three remained missing in the initial casualty figures.

Ambrey assessed it as highly likely that Russian forces carried out the attack, pointing to the vessel’s links with Ukrainian Danube ports.

That assessment represents an attribution by a commercial security organisation, rather than a final determination by an international investigative body.

Other incidents have similarly raised questions over responsibility.

Ukraine has accused Russia of attacking civilian shipping, while Bulgarian authorities have acknowledged difficulties in conclusively identifying the operators of drones involved in some strikes.

France strengthens maritime surveillance

Romania’s Defence Ministry announced on 27 October that the Atlantique 2 deployment followed a request from Bucharest in response to the deteriorating security situation.

The aircraft is conducting surveillance and reconnaissance over the western Black Sea, working with Romanian naval authorities and maritime rescue coordination services.

Its principal responsibilities include identifying hazards to navigation and improving awareness of threats to critical infrastructure within Romania’s exclusive economic zone.

That infrastructure includes offshore energy facilities and maritime installations whose protection is increasingly relevant to European energy security.

The deployment adds to Romanian naval patrols conducted by ships, helicopters and unmanned systems.

Romanian authorities are also providing navigational warnings and recommended routes to commercial vessels.

Nevertheless, additional surveillance does not automatically prevent attacks.

The practical challenge lies in detecting relatively small unmanned aircraft or maritime drones, determining their intentions and responding before they reach civilian targets.

Romania, Bulgaria and Turkey coordinate their response

The security crisis was also discussed at a trilateral meeting of defence ministers in Sofia on 28 October.

Romania’s Defence Minister, Ștefan-Radu Oprea, met his Bulgarian counterpart, Dimitar Stoyanov, and Turkey’s Defence Minister, Yaşar Güler, to examine the consequences of attacks on commercial shipping.

According to the Romanian Defence Ministry, the ministers discussed closer intelligence-sharing, improved maritime surveillance and better coordination between their naval forces.

They also reaffirmed the importance of the existing Black Sea mine-countermeasures initiative involving the three countries.

Maritime mines remain a persistent hazard because they can drift beyond their original deployment areas, endangering civilian vessels irrespective of their destination or ownership.

The trilateral format provides a practical mechanism for neighbouring countries to coordinate activities while retaining responsibility for their respective national waters.

It also gives Turkey a central role in regional discussions, reflecting its position on the Black Sea and its control of access through the Turkish Straits under the Montreux Convention.

The limits of NATO’s maritime protection

The attacks raise a complicated legal and operational question: what responsibilities do NATO members have when civilian ships are attacked near their coastlines?

The distinction between territorial waters and an exclusive economic zone is important.

A coastal state’s territorial sea generally extends up to 12 nautical miles from its baseline, while its exclusive economic zone can extend considerably further and confers particular economic and jurisdictional rights.

An attack within a NATO member’s exclusive economic zone does not automatically constitute an armed attack against that member’s territory.

Nor does every strike on a civilian ship near NATO territory automatically trigger the collective-defence provisions of Article 5.

The circumstances, attribution, location and consequences of an incident would all influence the response.

This creates a security problem in which threats can affect European economic interests without necessarily crossing a threshold requiring collective military action.

Maritime trade and energy infrastructure face increasing risks

The implications extend beyond individual vessels.

Repeated attacks can increase insurance costs, complicate shipping schedules and discourage operators from using particular routes.

They can also affect Ukrainian agricultural exports and the wider commercial networks linking Black Sea ports to European markets.

Offshore energy installations face related vulnerabilities, particularly where surveillance and response capabilities are insufficient.

For NATO, the challenge is therefore to strengthen deterrence and protection without unintentionally escalating the conflict.

France’s reconnaissance deployment and the trilateral cooperation between Romania, Bulgaria and Turkey indicate that regional governments are moving towards a more coordinated response.

However, the continuing attacks demonstrate the difficulties of protecting civilian maritime activity against comparatively inexpensive unmanned systems.

The longer-term question is whether increased surveillance, counter-drone capabilities and naval cooperation can make western Black Sea shipping sufficiently secure while the war in Ukraine continues.

A series of drone attacks on commercial shipping near Romania and Bulgaria has left sailors dead or missing, bringing Russia’s war against Ukraine closer to NATO territory. The European Parliament is calling for an EU naval mission, while Romania has begun shooting down hostile drones and NATO is preparing additional defensive measures.

The European Parliament has called for the possible deployment of an EU naval operation in the Black Sea following a series of deadly attacks on civilian merchant vessels near the Romanian and Bulgarian coasts. The resolution, adopted on 22 October 2026 by 432 votes to 52, with 88 abstentions, reflects mounting concern over the expansion of maritime threats towards NATO’s south-eastern flank.

The parliamentary resolution urges EU member states to consider establishing a naval mission to protect commercial shipping, while calling on NATO to examine a complementary regional initiative, provisionally described as Black Sea Sentry.

On 23 October, a drone struck the Comoros-flagged cargo vessel Khoryv, approximately 13 nautical miles from Romania’s port of Constanța. The vessel caught fire and sank, leaving one sailor confirmed dead and three missing. Nine crew members were rescued. The ship was carrying 13 Ukrainian and Azerbaijani sailors. According to information attributed to Romanian maritime authorities, difficult weather complicated rescue efforts.

Romanian President Nicușor Dan blamed Russia for the attack, which followed at least seven other strikes on commercial vessels during October. Across the incidents, approximately 30 sailors have been reported dead or missing, although the confirmed death toll is considerably lower.

Civilian Shipping Under Attack

The escalation began on 5 October when the Royad Mammadov, a Turkish-owned grain carrier sailing under the flag of Saint Kitts and Nevis, sank in Romania’s exclusive economic zone. Two sailors died and eleven were rescued. The vessel had departed the Ukrainian Danube port of Izmail carrying corn destined for Ravenna, Italy. Ukrainian President Volodymyr Zelenskyy attributed the sinking to Russian drones, although Romanian authorities did not initially establish responsibility.

The following day, two merchant ships were attacked approximately 70 nautical miles east of the Bulgarian coastal town of Byala. As EU Today reported, the Togo-flagged Alfa Watan sank after sustaining severe damage, while the Palau-flagged Able caught fire. All 18 sailors aboard the latter vessel were rescued, but the crew of the Alfa Watan remained unaccounted for.

The Bulgarian authorities confirmed that both aerial and maritime drones had been involved. Further attacks followed on 13 October, when the HS Dignity sank near Shabla, leaving eleven sailors missing, while the Chelsea-3 was struck near Byala. All 15 crew members of the latter vessel were evacuated.

Two chemical tankers, the Yara J and Wine Trader, were subsequently attacked near the Sulina Canal, a strategically important route connecting the Danube with the Black Sea. The incidents exposed the vulnerability of shipping corridors connecting Ukraine with international markets.

Romania Moves Towards Active Military Defence

Romania has responded by strengthening surveillance and authorising direct military action against drones entering its airspace. On 17 October, two Romanian F-16 fighter aircraft intercepted and destroyed hostile drones over Romanian territorial waters.

According to the Romanian Ministry of National Defence, the aircraft were scrambled from Borcea Air Base after radar systems detected aerial targets approaching from the direction of Snake Island. The drones, identified as jet-powered Geran-family attack aircraft, entered Romanian airspace before being destroyed southeast and east of Sulina.

The ministry disclosed that, during the preceding week, its radar systems had detected eight separate incidents involving aerial targets near the Romanian border, including four brief incursions into national airspace. On 14 October, Spanish F-18 aircraft operating under NATO air-policing arrangements were scrambled after drones approached Romanian airspace.

Bulgaria’s More Cautious Response

Bulgaria has taken a more reserved position concerning responsibility for the attacks. Although Prime Minister Rumen Radev acknowledged their seriousness, his government maintained that investigations must establish the origin of the drones before definitive conclusions could be drawn. Sofia nevertheless strengthened maritime surveillance, deployed rescue resources and requested assistance from European and NATO partners.

In August, a drone crossed into Bulgarian airspace from Romania and exploded near infrastructure associated with the Trans-Balkan Gas Pipeline. According to the Bulgarian government’s account, the aircraft was not detected by either national radar systems or NATO’s Combined Air Operations Centre in Torrejón, Spain. The European Parliament has now urged Sofia to accelerate participation in NATO’s counter-drone initiatives.

EU Proposes Maritime Security Operation

The European Parliament’s proposals include establishing an EU naval operation, improving early detection of hostile drones, accelerating the development of a Black Sea Maritime Security Hub and providing additional defence funding to Romania and Bulgaria. MEPs have proposed using resources under the EU’s SAFE defence financing instrument to support regional capabilities.

The proposed hub would facilitate intelligence-sharing, maritime surveillance and protection of critical infrastructure. Romania and Bulgaria have requested EU satellite imagery to improve their awareness of maritime threats, while the European Maritime Safety Agency has offered additional support.

At their October summit, EU leaders condemned attacks on civilian shipping and called for safe passage for vessels transporting agricultural products. The European Council’s conclusions addressed Black Sea and Danube shipping routes. However, the parliamentary resolution does not authorise a naval deployment: such an operation would require agreement among EU governments on its mandate, resources and rules of engagement.

NATO Faces an Expanding Security Challenge

NATO has responded by examining additional maritime surveillance and defensive measures, including patrol aircraft, radar systems and unmanned platforms. Romania has proposed stronger regional command arrangements involving NATO’s Black Sea members.

An existing framework provides a basis for cooperation. In July, Romania, Bulgaria and Türkiye agreed to expand the responsibilities of their joint mine countermeasures task group to include protection of critical underwater infrastructure. The agreement announced by Romania’s Defence Ministry extended cooperation beyond detecting and neutralising drifting mines.

Protecting commercial vessels against aerial and maritime drones would require broader capabilities. NATO must also operate within the restrictions of the 1936 Montreux Convention, which regulates passage of warships through the Turkish Straits and limits deployments by non-Black Sea countries. Romania, Bulgaria and Türkiye would therefore play central roles in any sustained maritime security operation.

Black Sea Security and the Risk of Escalation

Ukraine’s maritime export corridors remain essential to agricultural shipments following repeated Russian strikes on ports and logistics infrastructure. Attacks on commercial vessels can increase insurance costs, discourage shipping companies and disrupt trade even when port facilities remain functional.

The sinking of merchant vessels near allied territory, combined with repeated drone incursions into Romanian airspace, increases the possibility of military confrontation arising from an individual incident. The legal and military circumstances differ depending on whether an attack occurs in territorial waters, an exclusive economic zone or international waters.

The European Parliament’s proposal raises questions extending beyond maritime patrols: how civilian shipping can be protected, what military responses are authorised and how responsibility for attacks will be established. The sinking of the Khoryv on 23 October illustrates how the western Black Sea has become an increasingly exposed part of Europe’s security frontier.

The European Union has adopted a new Arctic strategy placing security at the centre of its northern policy, reflecting growing concern over Russian military activity, vulnerable submarine infrastructure and competition for control of emerging maritime routes.

Presented on Tuesday, 20 October, by the European Commission and EU foreign policy chief Kaja Kallas, the strategy proposes a maritime security hub, expanded satellite surveillance, greater icebreaker capacity and improved military mobility across northern Europe.

The document marks a departure from the EU’s 2021 Arctic policy, which placed greater emphasis on climate change, environmental protection and scientific cooperation. The revised framework treats the region as an increasingly important component of European security and economic policy.

Russia’s military presence reshapes European priorities

Russia’s expanding military infrastructure in the High North is a principal concern behind the policy revision.

Moscow has reopened Soviet-era military installations, strengthened its northern forces and maintained substantial nuclear capabilities on the Kola Peninsula. The region contains strategically important naval bases used by Russia’s Northern Fleet, including facilities supporting its submarine-based nuclear deterrent.

Russian operations in the Arctic also have implications for maritime access between the Atlantic and the Barents Sea, an area increasingly important to NATO’s northern defence arrangements.

The EU intends to work more closely with NATO and its northern partners, including Norway, Iceland, Britain, Canada and the United States, while developing capabilities that complement existing military structures.

Kallas said the Arctic’s security environment had deteriorated significantly since 2021, with geopolitical competition increasingly affecting a region previously associated principally with environmental and economic cooperation.

The EU’s revised priorities reflect concerns extending beyond conventional military deployments, particularly the exposure of undersea communications networks and energy infrastructure to sabotage and disruption.

New maritime security hub and submarine cable protection

A central proposal involves establishing an EU Maritime Security Hub to improve information-sharing between member states and partner countries operating in Arctic waters.

The system would strengthen monitoring of maritime movements and support the identification of suspicious activity near critical infrastructure.

Brussels also proposes an Arctic Cable Hub, initially concentrating on the protection, monitoring and repair of submarine communications cables across the North Atlantic and Arctic.

Such infrastructure carries international data traffic and supports communications between Europe, Greenland and North America. Damage to cables could interrupt telecommunications, financial services and government networks.

The Commission’s new Arctic policy framework also supports the proposed Pan-Arctic Cable connecting Greenland directly with Europe, together with secure satellite communications through the EU’s IRIS² programme.

Further measures envisage expanded use of Copernicus satellite surveillance, improved maritime intelligence and closer monitoring of vessels associated with Russia’s shadow fleet.

These measures form part of a broader attempt to improve European surveillance capabilities without relying exclusively on military assets provided by individual NATO members.

Icebreakers, transport corridors and military mobility

The strategy also addresses Europe’s limited capacity to operate in extreme northern conditions.

The Commission wants to support additional icebreaker capabilities, which are essential for maintaining access to Arctic waters, conducting emergency operations and supporting scientific and logistical activity.

Russian icebreaker capabilities remain considerably more extensive than those available to most European countries, providing Moscow with operational advantages along the Northern Sea Route.

European investment would also support ports, railways, energy terminals and digital infrastructure capable of serving both civilian and security requirements.

The emphasis on dual-use infrastructure reflects the growing importance of military mobility across northern Europe, particularly following Finland’s and Sweden’s accession to NATO.

Improved transport links could facilitate the movement of equipment and personnel while also supporting economic development in sparsely populated northern regions.

However, the Commission has not provided a comprehensive financial allocation for the proposed security measures, leaving important questions about funding, procurement and implementation.

Brussels retreats from Arctic drilling ban proposal

The revised strategy also introduces a significant change in the EU’s position on Arctic fossil fuel development.

In 2021, Brussels proposed pursuing an international legal commitment to prohibit further oil, gas and coal extraction in the Arctic.

The new strategy maintains the EU’s opposition to environmentally damaging fossil fuel development but no longer includes the explicit ambition to secure a multilateral legal prohibition.

The adjustment follows sustained disagreement with energy-producing countries and recognition that an international agreement would be difficult to achieve under current geopolitical conditions.

Norway has argued that continued exploration in parts of the Barents Sea remains important for European energy security, particularly as production from mature Norwegian fields is expected to decline.

EU Today previously reported on Brussels’ opposition to Norwegian Arctic drilling plans and the disagreements between environmental objectives and Europe’s long-term energy requirements.

The latest strategy does not represent an endorsement of new Arctic drilling. It does, however, acknowledge the limitations of the EU’s previous diplomatic approach.

Greenland and the northern economy

Greenland occupies a prominent position in the revised strategy because of its location, mineral resources and importance to transatlantic communications.

The Commission wants to expand cooperation on digital connectivity, critical raw materials, research and infrastructure investment, while recognising the responsibilities of Greenland’s own institutions and the Kingdom of Denmark.

Brussels also intends to strengthen scientific cooperation and support Arctic communities adapting to rapid environmental change.

The Arctic is warming nearly four times faster than the global average, creating new commercial opportunities while imposing substantial costs on local populations and infrastructure.

The EU’s proposals therefore combine security measures with investment in transport networks, research facilities and economic diversification.

For Brussels, implementation will require agreement between member states with different geographical interests, defence capabilities and budgetary priorities. Cooperation with NATO will also require careful coordination to avoid duplicating existing military arrangements.

The Commission has established a significantly broader Arctic agenda than the one adopted five years ago. Its practical impact will depend on whether member states finance the surveillance systems, vessels and infrastructure that the new strategy envisages.

Drone strikes against merchant vessels off Bulgaria have brought Russia’s war into waters bordering NATO and the European Union. With grain exports threatened, shipping costs rising and Sofia seeking allied protection, Moscow’s campaign against maritime trade risks becoming another instrument of economic and political pressure.

Russia’s expanding campaign against commercial shipping in the Black Sea is creating a security crisis that extends far beyond Ukraine. The latest drone attacks off Bulgaria’s coast have left 11 sailors missing, forced Sofia to seek assistance from NATO and the European Union, and raised concerns that Moscow is attempting to disrupt one of the world’s principal agricultural export routes.

On 13th October, the Guinea-Bissau-flagged HS Dignity sank after being struck by drones approximately 17 nautical miles east of the Bulgarian village of Krapets. Another vessel, the Ukrainian-owned, Maltese-flagged Chelsea 3, was attacked near Byala. All 15 crew members were rescued, although five sustained minor injuries. The incidents followed earlier attacks in Bulgaria’s exclusive economic zone on 6th October, when the ALFA WATAN sank and the grain-carrying ABLE was damaged.

The significance lies not simply in the destruction of merchant vessels but in the geographical expansion of the threat. Commercial routes previously regarded as comparatively safer alternatives to Ukraine’s exposed ports are now becoming operationally dangerous. Bulgaria and Romania, both NATO and EU members, face disruption to trade, maritime insurance and port operations as the conflict spreads across the western Black Sea.

Russia’s Campaign Against Maritime Trade

The latest attacks follow months of Russian strikes against Ukrainian ports, export terminals and civilian shipping. As EU Today previously reported, repeated attacks on Odesa have already reduced Ukraine’s grain-export capacity, while alternative routes through the Danube and neighbouring European countries cannot fully replace its major Black Sea terminals.

The extension of attacks towards Bulgaria changes the economic calculation. Ships carrying agricultural products, those approaching Danube ports and vessels operating between Black Sea countries now face greater uncertainty, regardless of whether they enter Ukrainian territorial waters.

Maritime security company Ambrey assessed the earlier October attacks as highly likely to have been conducted by Russian forces. Its assessment identified vessels associated with Ukrainian grain trade as the principal targets, rather than suggesting that every commercial ship was being attacked indiscriminately.

This distinction is important, but it offers little reassurance to international shipping companies. A campaign directed against Ukrainian trade can disrupt the wider maritime economy when insurers, shipowners and exporters cannot establish which routes remain safe.

The economic consequences are already becoming apparent. Shipowners must consider higher insurance premiums, additional security measures and the possibility of losing vessels and crews. Traders may redirect cargoes or withdraw from routes whose commercial returns no longer justify the risks.

Radev Confronts the Consequences of Moscow’s War

The attacks have also placed Bulgarian Prime Minister Rumen Radev in an increasingly difficult political position.

Radev has advocated renewed diplomatic engagement with Moscow and questioned the emphasis placed on military assistance to Ukraine. He has rejected accusations of being pro-Russian, presenting his approach as a pragmatic alternative to prolonged confrontation.

Yet the attacks have demonstrated the limitations of maintaining political distance from a war whose economic and security consequences are reaching Bulgarian waters.

After summoning Russian Ambassador Eleonora Mitrofanova on 13th October, Radev acknowledged that Bulgaria possessed no conclusive evidence establishing responsibility for the latest strikes. Nevertheless, he argued that their consequences benefited Russia and questioned why Ukraine would attack its own commercial vessels.

According to the Bulgarian News Agency’s account of the meeting, the prime minister also warned that higher insurance costs and shipping companies’ reluctance to serve Bulgarian ports were already damaging the national economy.

This is the fundamental change confronting Sofia. The conflict is no longer solely a question of Bulgaria’s position towards Ukraine or its diplomatic relationship with Russia. It is affecting the country’s commercial interests, energy supplies and responsibilities as a NATO member.

Radev’s response does not necessarily indicate a wholesale reversal of his previous political position. It demonstrates that the practical obligations of government can leave considerably less room for accommodation with Moscow than the arguments advanced from outside direct responsibility for national security.

Food Security Becomes Another Instrument of Pressure

The broader consequences may be felt most severely outside Europe.

Ukraine remains an important supplier of wheat, maize and vegetable oils to international markets, including countries in Africa, Asia and the Middle East. Interruptions to these exports affect more than Ukraine’s agricultural revenues. They can increase transport costs, delay deliveries and reduce the availability of competitively priced food in import-dependent countries.

Speaking at the Warsaw Security Forum on 12th October, President Volodymyr Zelenskyy warned of a possible agricultural crisis, arguing that Russian interference with Black Sea shipping could leave countries in Africa, Asia and the Middle East facing serious supply difficulties within months.

The warning reflects a mechanism already familiar from the earlier stages of Russia’s invasion. Following Moscow’s withdrawal from the UN-brokered grain agreement in July 2023, Ukrainian agricultural exporters faced renewed attacks on port infrastructure and substantial uncertainty over maritime access.

The danger is not necessarily an immediate worldwide shortage of grain. Wheat prices remained relatively steady following the 13th October incidents. Rather, sustained disruption could progressively reduce available export capacity, increase costs and place vulnerable importing countries under greater pressure.

For Moscow, such disruption could serve several purposes simultaneously: weakening Ukraine’s economy, raising the costs of international support for Kyiv and creating additional pressures on governments concerned about food inflation and social stability.

Europe’s Black Sea Security Strategy Faces a Practical Test

The immediate challenge for Brussels and NATO is how to protect commercial navigation without allowing the conflict to expand into a direct military confrontation.

Bulgaria has requested stronger air and maritime surveillance and is seeking closer coordination with Romania and Turkey. Defence Minister Dimitar Stoyanov said on 14th October that Sofia expected to join a NATO counter-drone initiative by the end of the month.

The EU has already developed a framework for addressing precisely such threats. Its Black Sea strategy, announced in May 2025, proposed a maritime security hub integrating surveillance, intelligence-sharing, infrastructure protection and regional cooperation.

The attacks now expose the difference between developing a security framework and providing effective protection to merchant vessels. Better intelligence can identify threats, but preventing further sinkings requires detection systems, coordinated responses and sufficient defensive capabilities.

Turkey’s involvement is particularly important because of its control over the Bosphorus and Dardanelles and its established role in Black Sea maritime security. Any workable regional arrangement must therefore extend beyond cooperation between Bulgaria and Romania.

The incidents occurred outside Bulgaria’s 12-nautical-mile territorial sea, meaning they do not automatically constitute an armed attack on NATO territory under Article 5. Nevertheless, repeated strikes within the economic zones of alliance members pose a substantial challenge to maritime security.

Russia’s campaign against Ukrainian exports is increasingly imposing costs on neighbouring European states and international trading partners. The question facing the EU is whether it can secure the commercial routes on which both Ukraine’s economy and the food supplies of millions beyond Europe depend.

“The Strait of Hormuz cannot be separated from the broader regional conflict,” Rezaei said.

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