Skip to main content
Incidents (7 days):27— Show on the map
Flank.bgDEFENCESECURITYGEOPOLITICS
Developing story

PlovdivDrones

Demerdzhiev: Bulgaria has requested help over drone attacks in the Black Sea

The interior minister expects further attacks and announced accelerated work on counter-drone capabilities. Neither the type of international assistance requested nor the timetable for bringing the new equipment into service has been specified.

By Flank Editorial TeamEditor-in-chief: Martin NestorovPublished: ConfirmedRead in Bulgarian
Share
The container ship Express Black Sea in Fremantle Harbour, Australia, with port cranes in the background.
Archive photo: The container ship Express Black Sea in Fremantle Harbour, Australia, in April 2026.Photo: Calistemon / Wikimedia Commons, CC BY-SA 4.0

Interior Minister Ivan Demerdzhiev said Bulgaria had sought help from the US, its European partners and international organisations because of the situation in the Black Sea. He expects further attacks involving unmanned aerial vehicles. According to BurgasMedia, the outlet reporting his statement, the minister spoke to journalists in Plovdiv on Sunday, 8 November.

New equipment along the maritime border

Demerdzhiev said the Ministry of Interior and the Ministry of Defence had mobilised their resources, accelerated work on counter-drone capabilities and were installing new technical equipment along the maritime border. He said Bulgaria's technical capabilities for protection needed to improve significantly.

The models, quantities and timetable for bringing the equipment into service have not been specified. Nor has it been clarified whether it will be used to detect, identify and track unmanned systems, to counter them, or for both tasks. The announced measures therefore do not in themselves indicate what protective coverage they will provide.

The request for international assistance does not mean that support has already been agreed or delivered. Neither its type and scale nor any specific commitments from partners have been announced.

Operations outside territorial waters

Demerdzhiev clarified that the incidents were not in Bulgaria's territorial waters but in its exclusive economic zone. According to the minister, the authorities can primarily undertake rescue operations there, as international maritime law and the rules in force place restrictions on their intervention.

This is the minister's explanation of the authorities' powers, not an independent legal assessment of all permissible actions. He did not specify which incidents he meant, so his description cannot automatically be applied to every case along the Black Sea coast.

Forecast of further attacks without a specific threat identified

On 6 October 2026, the ship Alfa Watan sank following an attack involving unmanned aerial vehicles in Bulgaria's exclusive economic zone. On 28 October, three unmanned surface vessels struck the container ship CONTSHIP JET off Cape Kaliakra. These confirmed attacks provide direct context for the risk to shipping, but do not establish exactly which cases the minister was referring to.

Demerdzhiev's expectation of further attacks is a forecast, not an announcement of an attack that has already taken place. The statement identifies no suspected perpetrator, targets or timeframe. Nor can it be used to conclude that the previous attacks form part of a single campaign.

This is a developing story and may be updated if clarification emerges about the assistance requested, the equipment and the incidents.

Why This Matters for Bulgaria

For Bulgaria, the issue concerns protection of the maritime border and the safety of shipping. The confirmed attacks on ships provide the specific context for the risk, but the announced measures do not yet indicate what protective capabilities will be provided.

Sources1

1 secondary report

We cite the source of every material fact. Unverified information is labelled as such.

Linked to this story

Share

Black SeaDrones

European investigation examines hundreds of incidents with suspected Russian links

According to the Ukrainian outlet ArmyInform, the investigation covers sabotage, airspace violations and attacks on merchant ships. The attacks off Bulgaria and Romania are confirmed by the authorities, but the Russian link and the investigation's overall figures are unverified.

Updated: 3 min readSource: Official sourceProbable

Black SeaDrones

Ivo Hristov: Government will not identify drones’ origin without evidence

The deputy prime minister said the government is awaiting expert examinations and will not name the drones’ origin without evidence. The attacks on the five ships in Bulgaria’s economic and contiguous zones are recorded in Flank’s chronology.

Updated: 2 min readSource: Verified media

Sofia, BulgariaAnalysis

President and prime minister in step: what Yotova’s win means for defence and the Black Sea

Iliana Yotova won the runoff with 57.6%, and for the first time in years Bulgaria's head of state and prime minister will pursue one foreign and defence policy. The vote came amid ships sunk in Bulgaria's economic zone, a dispute over a donation from a company bearing the name of a Ukrainian drone maker, and protests outside the Presidency. What is established and what remains a claim.

6 min readSource: Verified media

Black SeaAnalysis

Black Sea defence tests the path from allied support to operational readiness

Attacks on shipping and bomb threats against civilian flights highlighted different tasks facing Bulgarian defence: protection, surveillance and responding to uncertain information. In Flank’s assessment, the common question is whether allied mechanisms, new procurement and the national budget can deliver a functioning system rather than just individual assets.

7 min readSource: Official source

Vessel history

Subscribe to the Flank.bg newsletter

The essentials on defence and security in Bulgaria, the region and the Black Sea, in your inbox once a week.

  • The week's news in brief
  • The weekly analysis and new OSINT pieces
  • Incidents in the Black Sea
Follow Flank on Telegram too (in Bulgarian)

Just the newsletter, no ads. Unsubscribe at any time.

Newsletter

What matters in security — once a week

Just the newsletter, no ads. Unsubscribe at any time.