This photo taken on Aug 23, 2019 in Istanbul shows a view of Turkish General Directorate of Mineral research and Exploration's  Oruc Reis seismic research vessel docked at Haydarpasa port. (PHOTO / AFP)

BRUSSELS / ANKARA / ATHENS - The European Union (EU) said on Tuesday recent developments in the eastern Mediterranean are “extremely worrying” and warned of escalating tensions between Turkey and Greece, who are at odds over overlapping claims for hydrocarbon resources in the region.

The latest developments are extremely worrying.

Peter Stano, European Commission spokesman on foreign affairs 

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“The latest developments are extremely worrying,” European Commission foreign affairs spokesman Peter Stano told a regular news conference.

“What is needed to be done is to engage in solving all the open issues in line with principles of good neighbourly relations, international law and positive engagement,” he said.

The EU, which has imposed an entry ban and asset freeze on two Turkish energy executives over previous Turkish exploration in disputed waters, called for dialogue. 

Turkey will issue gas exploration and drilling licences in the eastern Mediterranean this month, its foreign minister said on Tuesday, further raising tensions with Greece, which said it would seek an emergency EU meeting to address the issue.

On Monday, Turkey sent an exploration vessel into a disputed area, ending a brief period of calm brokered by Germany. Ankara said a maritime deal Greece signed with Egypt last week showed it could not trust Athens, and vowed to continue surveying waters that are also claimed by Greece and Cyprus.

Foreign Minister Mevlut Cavusoglu said Ankara would issue new seismic exploration and drilling licenses by the end of August. “Our determination is unfaltering here,” he told reporters. “We will not compromise in any way from this.”

Backing up Cavusoglu’s unyielding tone, Turkey’s communications director Fahrettin Altun tweeted video footage of Turkish fighter jets, warships and exploration vessels deployed at sea.

“Every drop of our blue homeland is sacred,” Altun tweeted, referring to a doctrine championed by recent Turkish naval commanders calling for Ankara to adopt a more muscular approach in its coastal waters.

Turkey says it has the longest coastline in the eastern Mediterranean but that it is penned in to a narrow strip of coastal water by the presence of numerous small Greek islands close to its shore. Greece and other regional states cite a United Nations accord to support their maritime demarcations.

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Athens seeks emergency EU meeting

Greece will request an emergency meeting of the European Union foreign affairs council, the prime minister’s office said, while Greek Foreign Minister Nikos Dendias urged Turkey to “immediately leave the Greek continental shelf”. Athens would defend its rights, he said.

In a video call with military commanders, Turkish Defence Minister Hulusi Akar said Turkey had completed preparations to protect Turkish interests.

The United States appealed for a resumption of direct talks between Turkey and Greece, which Turkish presidential spokesman Ibrahim Kalin said had been under way for two months until they were broken off last week.

The contacts had led to “an understanding” between them, which was then scuppered by Thursday’s announcement of the Greek-Egyptian deal, he said.

“The moment the accord with Egypt was announced, we received very clear orders from our president. ‘Stop the talks’,” Kalin told broadcaster CNN Turk at the weekend.