Turkey reminds Greece of a 1995 parliamentary declaration in which Ankara authorised action, not excluding military action, to safeguard Turkish interests in the Aegean.
Greek Foreign Minister Nikos Kotzias has resigned after a dispute over the country's controversial name deal with Macedonia.
UN mediator Matthew Nimetz has already proposed four alternative names in Macedonian and will discuss the issue with Greek Foreign Minister Nikos Kotzias.
The dispute between Skopje and Athens dates back to Macedonia's declaration of independence from Yugoslavia in 1991 and has strained neighbourly relations.
Athens has blocked the Republic of Macedonia's attempts to join NATO and objects to its EU membership bid because it says the name Macedonia implies a territorial claim over Greece's own northerly region of that name.
Turkish Foreign Minister Mevlut Cavusoglu says 995 Turks have applied for asylum in Greece since last year's FETO coup attempt in Turkey.
Turkish Cypriot and Greek Cypriot leaders are meeting in Switzerland amid growing pressure to reach a peace deal that will end over four decades of division in Cyprus.
The negotiations on the long-running Cyprus conflict are the best chance, but maybe not the last one, for Turkish Cypriots and Greek Cypriots to get an agreement, the UN envoy to the island says.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2020 TRT World.