A row over over borders, gasfields and national pride risks regional disorder

Some claim it has been centuries since the Mediterranean has been viewed as the cockpit of history. But great powers and coastline states, wishing to capture hydrocarbon riches, are today vying for mastery of the sea – or at least its eastern waves. The trouble surfaced last month when a Turkish frigate escorting an oil-and-gas exploration ship collided with a Greek naval vessel. Since then, tempers have flared, with the unresolved question of Cyprus providing a flashpoint between the two nations. Greek ships were last week joined by France, Italy and the United Arab Emirates in the waters around Cyprus. Turkey announced that Russia will hold naval exercises. Nato is right that the temperature needs lowering and ought to be congratulated for kickstarting talks aimed at de-escalation. Nato members ought to trade words, not blows.

In Turkey there has been a lurch towards authoritarianism under the executive presidency of Recep Tayyip Erdoğan, while the country’s military, economic and cultural power has expanded. Not since the Ottoman empire has the Turkish military had such a sprawling global footprint, with troops and drones recently saving a UN-recognised government in Tripoli from defeat. Despite a Covid recession, Turkish companies retain a global edge – taking advantage of cheap labour, made even cheaper by a weak Turkish lira, and access to European markets. Mr Erdoğan has also won favour in the Sunni Arab world by hosting 4 million Syrian refugees.