Turkey Drafts Law Giving President Erdogan Control Over Disputed Mediterranean Waters

From the Aegean islands pressed close to the Anatolian coast to the gas fields south of Cyprus, Turkey is preparing to put law behind a claim it has long made at sea. The AKP's "Maritime Jurisdiction Zones Law," presented at Ankara University on 12 May, would write the Blue Homeland doctrine into statute for the first time. It would give President Erdogan the power to declare exclusive Turkish control over waters that Greece and Cyprus say are theirs (Al-Monitor, Turkiye Today). The calendar matters. Ankara hosts the NATO summit on 7-8 July, and the bill is expected to reach parliament in the weeks beforehand.

A Domestic Law With Cross-Border Teeth

Turkey never signed UNCLOS, the UN Convention on the Law of the Sea and the closest thing the world has to a constitution for the oceans. That lets Ankara avoid treaty obligations it never accepted. The bill instead creates a domestic enforcement switch: Turkish agencies would be able to stop, seize or expel vessels operating in waters Turkey claims on its own terms. Greek Foreign Minister Gerapetritis warned on 15 May that putting these claims into law "will doom Aegean détente" (iefimerida.gr). Athens had already written formally to the UN in March, arguing that all Greek islands, whatever their size, generate full maritime zones under customary international law (Capital.gr).

Outside Turkey, the bill has no force in international law. That is not the point. By giving the president a decree mechanism, Ankara would turn what used to be naval pressure into state enforcement. The dispute would move from ships testing each other at sea to claims written into domestic law.

Three European Powers, Three Different Calculations

Europe's response is not really European. France, Germany and Italy are each making their own calculation.

France has gone for military signalling. Macron visited the carrier Charles de Gaulle off Crete after saying in Athens on 25 April that France would stand with Greece "whatever happens" (Élysée). A Status of Forces Agreement with Cyprus, expected in June, would formalise a French military presence on the island, making southern Cyprus a forward platform for European power projection (Observatoire Turquie).

Germany is trying to keep both doors open. The Merz government is assessing Turkish long-range missiles as a replacement for Tomahawks, with a decision possible at the Ankara summit itself (Klamm.de). Berlin is deliberately planning to fund the purchase bilaterally rather than through SAFE, the EU's new joint defence procurement fund, because Greece and Cyprus would block an EU-level deal (RegionalHeute). The Konrad Adenauer Foundation calls it a "strategic bet": choosing Turkey as NATO's southern anchor over solidarity with EU members (KAS).

Italy is saying little. Rome has signed a drone deal with Baykar, is deepening naval-industrial cooperation with Ankara, and wants bilateral trade to reach €40 billion by 2030 (Formiche). Palazzo Chigi has not publicly criticised the Blue Homeland bill.

The NATO Trap

The US troop withdrawal from Europe, including 5,000 soldiers from Germany and a cancelled brigade rotation to Poland, gives Turkey more room to manoeuvre (LA Times, Euronews). NATO Secretary General Rutte visited Turkey's ASELSAN defence complex in April, described its military-industrial advance as a "revolution", and has refused to comment publicly on the Greece-Turkey dispute (NATO, NATO transcript).

Turkey knows how to use NATO's rules. It used its veto over Swedish membership to secure F-16 deals. It took US sanctions over the S-400 purchase without leaving the alliance. Now it is legislating maritime claims against two EU members while hosting the summit that needs their cooperation. The question for allies is whether NATO consensus, where any single member can block decisions, restrains Turkey or gives it leverage.

What Remains Open

The bill has not yet entered the Turkish parliament. If it passes before the summit, allies face a fait accompli. If it comes afterwards, it remains a bargaining chip. The EU's strongest response, sanctions, would need unanimous approval in the Council, and that is blocked in practice by the same member states now deepening arms ties with Ankara. Cyprus's gas fields, Kronos, Aphrodite and Glaucus, are already facing investment delays as legal uncertainty builds (Politis). Europe's three largest powers each have a different price for looking away. Turkey's bet is that they cannot agree on the price of pushing back.