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Drone Explosion in Constanta Port: Ukraine Warns Romania 15 Minutes Before Blast
Romanian authorities received a warning from Ukraine only 15 minutes before a Ukrainian sea drone exploded in the Port of Constanta on June 5, 2026, according to Romanian Defense Minister Radu Miruta. The incident, which involved four unmanned surface vessels that lost control due to Russian electronic warfare jamming, marks a significant escalation of the Ukraine war spilling into NATO territory. The explosion at the Black Sea's largest port highlights growing concerns over the Black Sea security risks for NATO and the dangers of drone warfare along Europe's eastern flank.
Speaking to Euronews, Minister Miruta detailed how Romanian authorities scrambled to evacuate the area after Ukraine reported losing control of four sea drones. 'We were informed about 10 to 15 minutes before the first explosion,' Miruta said. 'It was essential to protect the lives of our researchers who were already examining the drone in the port.' The first drone detonated at 10:28 AM local time, after investigators were ordered to withdraw and a 1-kilometer safety zone was established around the site.
Timeline of the Incident: How the Drone Attack Unfolded
The sequence of events on June 5, 2026, underscores the rapid response required to prevent casualties. According to official Romanian accounts, the timeline was as follows:
- 10:10 AM: Romania identifies a sea drone in Constanta port and contacts Ukraine for information.
- 10:15 AM: Ukraine confirms it has lost control of four drones due to Russian jamming and warns they will self-detonate.
- 10:25 AM: Romanian authorities evacuate researchers, seal off the port area, and establish a 1-km security perimeter. Over 1,300 people are evacuated from nearby Black Sea beaches.
- 10:28 AM: First drone explodes inside the Constanta port, near an oil terminal.
- 10:45 AM: A merchant ship reports two strong consecutive explosions approximately 145 km east of Constanta, in the Black Sea.
- 11:05 AM: The fourth drone detonates just outside the port, near the location of the first explosion.
No casualties were reported, though the blasts shattered windows in nearby cars and buildings. Romania deployed helicopters and coast guard vessels to search for any remaining drones in the area. The incident follows a similar pattern to the 2025 Romanian drone incidents involving Russia that have tested NATO's eastern defenses.
Russia's Electronic Warfare: Jamming Technology Blamed
Ukrainian officials confirmed that the drones were conducting operations against Russian naval targets in the Black Sea when they lost control due to Russian electronic warfare jamming. Romania's President Nicusor Dan stated on X (formerly Twitter) that 'the Ukrainian forces lost control of the means as a result of electronic warfare by Russia,' specifically citing jamming techniques that disrupt GPS and communication signals.
The Ukrainian Navy acknowledged the loss of the unmanned surface vessels during a Black Sea mission and stated it had provided Romanian naval authorities with timely information to prevent civilian casualties. Russia's embassy in Bucharest denied any involvement, calling the drones Ukrainian weapons used for terrorism. However, Romanian officials and NATO allies have consistently pointed to Russia's aggressive electronic warfare capabilities as a growing threat to regional stability.
This incident is the second major security breach in Romania within a week. On May 29, 2026, a Russian kamikaze drone struck an apartment building in Galati, injuring two people. The back-to-back incidents have raised alarms in Bucharest and Brussels about the expanding geographic reach of the Ukraine war and the vulnerability of NATO member states.
Strategic Importance of Constanta Port and Black Sea Security
The Port of Constanta is the largest on the Black Sea and the 17th largest in Europe, covering 3,926 hectares. It serves as a critical hub for grain and oil shipments, including alternative export routes for Ukrainian grain since the war began. The port also hosts NATO operations and is a key logistics center for the alliance's eastern flank. The drone explosion near an oil terminal underscores the potential for catastrophic damage to critical infrastructure.
Romanian Defense Minister Miruta expressed frustration that Ukraine did not provide earlier warning. 'We expect them to let us know as soon as they lose control,' he said. 'I understand that a country at war has changing priorities, but it is essential to be warned in advance to take necessary measures and protect civilians.' The European Council expressed solidarity with Romania, condemning the violation of NATO member airspace as a direct consequence of Russia's aggression.
FAQ: Ukraine Drone Explosion in Romania
What happened in Constanta, Romania on June 5, 2026?
A Ukrainian sea drone exploded in the Port of Constanta after Ukraine lost control of four unmanned vessels due to Russian electronic warfare jamming. Three other drones self-detonated in the Black Sea. No casualties were reported.
Why did the Ukrainian drone enter Romanian territory?
Ukraine stated that Russian electronic warfare jamming disrupted the drone's navigation and communication systems, causing it to drift into Romanian waters and territorial space.
Did Romania receive any warning before the explosion?
Yes, Ukraine warned Romania approximately 10 to 15 minutes before the first explosion, allowing authorities to evacuate over 1,300 people from the port and nearby beaches.
Is this the first time a drone has struck Romania?
No. A week earlier, on May 29, 2026, a Russian kamikaze drone crashed into an apartment building in Galati, Romania, injuring two people. Drone debris has also been found in Romanian territory multiple times since 2022.
What is Russia's response to these accusations?
Russia's embassy in Bucharest denied involvement, claiming the drones were Ukrainian weapons used for terrorism and rejecting any Russian responsibility for the incident.
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