The Ukrainian drone in Skaramangas.

Greece has formally confirmed that it lodged two diplomatic demarches with Ukraine over the activity of a Ukrainian naval drone in the Ionian Sea, according to Foreign Ministry spokeswoman Lana Zochiou.

The demarches followed findings by Greece’s armed forces general staff. Foreign Minister George Gerapetritis briefed European Union foreign policy chief Kaja Kallas, Ukrainian Foreign Minister Andrii Sybiha and NATO Secretary-General Mark Rutte on the findings while attending an informal EU foreign ministers’ meeting last week in Limassol, Cyprus.

Athens submitted both verbal and written demarches to the Ukrainian Embassy in Athens and to Ukraine’s Foreign Ministry in Kyiv. Greek officials said Kyiv has not yet responded to issues raised either directly by Gerapetritis or through the formal demarches.

Greece highlighted four main concerns. First, it argued that the activity of a Cossack Mamai unmanned surface vehicle near Lefkada amounted to the transfer of military operations into the Mediterranean, far from the war’s actual front line, creating risks for Greece’s national security and economy.