Greece, meanwhile, has announced plans to extend its territorial waters along its western coastline.
The neighbouring countries have sent warships to shadow each other in the eastern Mediterranean and held military exercises this week within an area between Crete and Cyprus where Turkey has a vessel conducting drilling research in waters claimed by them both.
Turkish President Recep Tayyip Erdogan said: “Turkey will take what is its right in the Mediterranean, in the Aegean and in the Black Sea. Just as we have no eyes over anyone’s territory, sovereignty and interests, we will never compromise on what belongs to us. We are determined to do whatever is necessary in political, economic and military terms.”
Mr Erdogan’s tough words came despite mediation efforts by Germany, whose foreign minister conducted shuttle diplomacy between Athens and Ankara a day earlier in a bid to de-escalate the situation as Turkey and Greece engaged in competing military exercises at sea.
“We invite our interlocutors to get their act together and to avoid mistakes that will lead to their ruin,” he said.
In Athens, meanwhile, Prime Minister Kyriakos Mitsotakis said Greece is planning to exercise its legal right to extend its territorial waters along its western coastline from six to 12 nautical miles.
The planned extension along Greece’s Italy-facing coastline would not directly affect the territory at the centre of the Greek-Turkish dispute. But Mr Mitsotakis told the Greek parliament that Greece is abandoning decades of “passive” foreign policy.
German foreign minister Heiko Maas appealed to both Greece and Turkey on Tuesday to enter a dialogue and defuse the tensions, warning that “any spark, however small, could lead to a disaster”. His visits came ahead of a meeting of EU foreign ministers in Berlin later this week, at which Turkey will be discussed.
After talks with Mr Maas, the foreign ministers of both Greece and Turkey signalled readiness for dialogue but blamed each other for the stand-off.
The Turkish vessel Oruc Reis has for weeks been carrying out seismic research escorted by Turkish warships. Greece, which says the ship is operating over the country’s own continental shelf in an area where it has exclusive rights on potential undersea gas and oil deposits, sent warships to shadow the Turkish flotilla.
Turkey disputes Greece’s claims, insisting that small Greek islands near the Turkish coast should not be taken into account when delineating maritime boundaries. Ankara accuses Athens of trying to grab an unfair share of the eastern Mediterranean’s resources.
Turkey is also prospecting for hydrocarbons in waters where Cyprus claims exclusive economic rights. Ankara says it is protecting its rights and those of Turkish Cypriots on the ethnically-divided island.
“Everyone must see that Turkey is not a country whose patience can be tried, whose determination, capabilities and courage can be tested. If we say we’ll do something we’ll do it and pay the price,” Mr Erdogan said on Wednesday. “If anyone wants to stand before us and face the consequences, they are welcome to. If not, stay out of our way and we will continue with our work.”
The Turkish leader spoke during an anniversary celebration marking the 1071 battle of Manzikert, during which Turkish Seljuks beat Byzantine forces, gaining entry into Anatolia.