French ships enter eastern Mediterranean as tensions between Turkey and Greece mount

ATHENS, Greece -- Greece's prime minister warmly thanked France Thursday for boosting its military presence in the eastern Mediterranean, where Greek and Turkish warships are closely shadowing each other over a Turkish energy exploration bid in waters Athens claims as its own.

Meanwhile, Turkey accused Greece and the island nation of Cyprus of encroaching on its rights in the Mediterranean and vowed to defend its interests in the region - but also called for dialogue to resolve the dispute.

Greek Prime Minister Kyriakos Mitsotakis tweeted that French President Emmanuel Macron was “a true friend of Greece and also a fervent protector of European values and international law.”

The mounting tension follows Turkey's deployment of a seismic research vessel, escorted by warships, into waters between the Greek island of Crete and Cyprus to prospect for potential offshore gas and oil, following similar discoveries elsewhere in the region.

Greece claims part of the area covers its own continental shelf and has demanded that the Turkish ships withdraw. Turkey counters that it's entitled to conduct research there. Greece placed its military on alert, and sent warships to the area off Turkey's southern coast.

In Ankara, and later in talks with European officials, Turkish President Recep Tayyip Erdogan reiterated a call for dialogue.

“The path for a solution in the eastern Mediterranean is dialogue and negotiation,” Erdogan said during an address to his ruling party's officials. “A formula based on a win-win solution that protects the rights of all can be found if we act with common sense and reason.”

“Greece's attitude in the Aegean and the Mediterranean is malicious,” Erdogan said, adding that the Greek island on which Athens bases its continental shelf claim is located just 2 kilometres (1.25 miles) from the Turkish coast and 580 kilometres (360 miles) from the Greek mainland.

Erdogan said: “We don't have designs on anyone's rights, but we won't let any country take away our rights.”

He also accused France of “provoking” Greece and Cyprus into taking “wrongful steps.”

Erdogan later spoke on the phone with German Chancellor Angela Merkel, who has previously interceded to ease similar tensions between Turkey and Greece, and with EU Council President Charles Michel.

Merkel also spoke on the phone with Mitsotakis.

The Greek Defence Ministry said the French frigate Lafayette and the helicopter carrier Tonnerre held joint exercises with four Greek frigates Thursday in the eastern Mediterranean, including in areas Turkey is exploring. Two French Rafale fighter jets are making a stop Thursday at Souda, on Crete, after being previously deployed in Cyprus for an exercise.

The French Defence Ministry said France's military presence “affirms the country's attachment to free movement, maritime safety and respect for international law in the Mediterranean Sea.”

Macron announced following a phone call with Mitsotakis late Wednesday that he decided to “temporarily reinforce the French military presence in the eastern Mediterranean in the coming days, in co-operation with European partners including Greece.”

Greece's NATO and European Union ally France is the EU's biggest military power. Complicating matters, Turkey - Greece's historic regional rival - is also a NATO member but has poor relations with France.

In a televised statement Wednesday, Mitsotakis warned of the “risk of an accident” in the patch of sea where the Greek and Turkish warships are gathered.

“In such a case, responsibility lies upon the one who gives rise to these circumstances,” he said. He added that Greece was not averse to “even the toughest dialogue,” but that “dialogue becomes irrelevant in a climate of tension and provocation.”

“We will never be the ones to escalate the situation. Yet, self-restraint is only one aspect of our power,” Mitsotakis said. “No provocation will ... go unanswered.”

On Thursday, Greek Foreign Minister Nikos Dendias visited Israel for talks on the matter, as well as on a project between Israel, Greece and Cyprus to transport Israeli gas from offshore reserves through an undersea pipeline to Italy.

Dendias said that during meetings with Prime Minister Benjamin Netanyahu and Foreign MInister Gabi Ashkenazi, he “made it clear that Turkey's illicit behaviour poses a threat to all countries in our region - a threat to security and stability.”

Netanyahu said Greece and Israel enjoy shared interests.

“Obviously, we view gravely any aggression by anyone, including Turkey, in the eastern Mediterranean,” Netanyahu said.

Dendias is due to meet U.S. Secretary of State Mike Pompeo in Vienna on Friday.

Turkish Foreign Minister Mevlut Cavusoglu held calls with EU foreign policy chief Josep Borrell and several EU foreign ministers ahead of Friday's emergency meeting of the EU's Foreign Affairs Council that will discuss the situation in the eastern Mediterranean.

Cypriot Foreign Minister Nikos Christoulides tweeted Thursday that Israel's Ashkenazi communicated with him to “reiterate Israel's support and solidarity in the face of escalating aggression in Cyprus' maritime zones.”

Suzan Fraser in Ankara, Sylvie Corbet in Paris and Menelaos Hadjicostis in Nicosia, Cyprus, contributed to this story.