Ukraine officially apologized to the Greek government on Friday following the discovery of a Ukrainian sea drone near the Ionian island of Lefkada. The unexpected discovery of the uncrewed surface vessel prompted swift diplomatic action from Athens, which raised serious safety and environmental concerns regarding the military presence in Greek territorial waters.

Last week, the Greek government escalated the issue by lodging a formal double diplomatic demarche. Athens directed its official protests to both the Ukrainian Embassy located in the Greek capital and directly to the Ukrainian Ministry of Foreign Affairs in Kyiv. Greek authorities clearly stated that the stray sea drone severely compromised the safety of civilian maritime navigation in the busy Ionian Sea, which is a popular tourist destination both for Greeks and foreigners. Experts noted that any accidental detonation or collision involving the device could have led to human casualties and inflicted extensive environmental damage on the region’s marine ecosystem.

Ukraine’s response to Greece

In direct response to the diplomatic protest from Athens, Ukrainian Foreign Ministry spokesman Heorhii Tykhyi released a public statement on social media late on Friday evening, addressing the issue. Tykhyi offered a formal apology on behalf of Ukraine, attributing the drone’s errant journey into Greek waters to the unpredictable circumstances generated by the ongoing Russian invasion of Ukraine.

“The Ukrainian side expresses its apologies for the incident, stressing that it was the result of circumstances brought about by the ongoing Russian aggression,” Tykhyi wrote in a statement published on Friday. He argued that the discovery off the coast of Lefkada, along with similar events reported in other regions, demonstrates how the current conflict threatens not only Ukraine but also friendly European states and the broader international community.

Addressing the specific maritime concerns raised by the Greek demarche, the Ukrainian foreign ministry noted its strict commitment to international law and the fundamental principles of civilian maritime safety. Ukraine also reiterated a strong, vested interest in preventing any similar occurrences from happening in the future.

Tykhyi pointed out that international and regional security, specifically maritime safety and combating the operations of Russia’s “shadow fleet,” remain urgent, shared priorities for both Greece and Ukraine. Despite the immediate friction caused by the drone’s discovery, Ukraine utilized the statement to emphasize the strength of its bilateral relationship with Greece.

The foreign ministry expressed deep gratitude to the Greek government and the Greek people, praising the country for its steadfast, continuous support of Ukraine since the very first days of Russia’s full-scale invasion. Kyiv concluded by reaffirming its dedication to deepening these friendly relations and maintaining a constructive dialogue across all areas of mutual interest.

Greece has issued a formal diplomatic demarche to Ukraine after fishermen discovered an armed naval drone off the island of Lefkada on May 7. Athens warned that the incident endangered maritime traffic, civilians, the environment, and national security.

Greek Foreign Ministry spokesperson Lana Zochiou said during the regular briefing of diplomatic correspondents that Athens formally raised the issue with Kyiv after authorities found the unmanned surface vessel inside Greek territorial waters.

According to Zochiou, Greece’s protest note stressed that the naval drone posed a serious threat to maritime navigation and could have cost innocent lives. Athens also warned that the presence of an armed unmanned vessel in Greek waters could have caused major environmental damage.

Greece warns against moving war operations to the Mediterranean

The Greek government said the incident raised broader security concerns, as it appeared to bring military activity linked to the war in Ukraine into the Mediterranean, far from the actual battlefield.

“The transfer of war operations to the Mediterranean, at a great distance from the real front of the war, puts our national security at risk and deals a decisive blow to our national economy,” the protest note stated, according to Zochiou.

For Greece, the presence of an armed naval drone in its waters carries particular sensitivity because the country relies heavily on shipping, tourism, fishing, and maritime security. Athens made clear that it would view any expansion of war-related activity into the Mediterranean as a direct threat to Greek interests.

Greece’s demarche to Ukraine says self-defense doesn’t justify drone incident

Greece also told Ukraine that Kyiv’s right to defend itself against Russia cannot justify actions that endanger Greek territory, civilians, or maritime activity.

“The right of Ukraine to self-defense cannot justify such actions,” Athens stated in the diplomatic demarche.

The Greek government strongly objected to the illegal presence of the armed unmanned surface vessel in Greek territorial waters and called on Ukraine to avoid similar actions in the future.

Athens also urged Kyiv to refrain from what it described as the unjustified transfer of military operations to the Mediterranean.