Turkey Drafts Law Giving President Erdogan Control Over Disputed Mediterranean Waters

From the Aegean islands off Anatolia to the gas fields south of Cyprus, Turkey is preparing to give domestic legal force to one of the Eastern Mediterranean’s most contested doctrines. The AKP’s "Maritime Jurisdiction Zones Law", presented at Ankara University on 12 May, would put the Blue Homeland doctrine into statute for the first time. It would give President Erdogan the power to declare exclusive Turkish control over waters also claimed by Greece and Cyprus (Al-Monitor, Turkiye Today). The calendar matters: Ankara hosts the NATO summit on 7-8 July, and the bill is expected in parliament weeks before.

A Domestic Law With Cross-Border Teeth

Turkey never signed UNCLOS, the UN Convention on the Law of the Sea and the closest thing to a global rulebook for maritime borders. The draft law therefore works through Turkish domestic law, not treaty law. It would allow Turkish agencies to stop, seize, or expel vessels operating in areas Ankara claims on its own authority. Greek Foreign Minister Gerapetritis warned on 15 May that writing these claims into law "will doom Aegean détente" (iefimerida.gr). Athens had already sent a formal letter 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. Its importance lies elsewhere. By creating a presidential decree mechanism, Ankara would turn what used to be naval signalling into state enforcement. For small Mediterranean states like Malta, which rely on open sea lanes and predictable maritime rules, that distinction matters. A dispute that once played out through patrols and diplomatic notes would acquire the machinery of domestic law.

Three European Powers, Three Different Calculations

Europe’s response is not European in any meaningful sense. France, Germany, and Italy are each making their own calculation.

France has chosen 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 the French military presence on the island and make southern Cyprus a forward platform for European power projection (Observatoire Turquie).

Germany is keeping 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 intends to finance 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 describes this as a "strategic bet": Germany is choosing Turkey as NATO’s southern anchor over solidarity with EU member states (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). No public criticism of the Blue Homeland bill has come from Palazzo Chigi.

The NATO Trap

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

Turkey has used NATO’s rules before to extract concessions. It used its veto over Sweden’s membership to secure F-16 deals. It absorbed US sanctions over the S-400 purchase without leaving the alliance. It is now preparing to legislate maritime claims against two EU member states while hosting a summit that needs their cooperation. The test is whether NATO’s consensus rule, under which any member can block decisions, limits Turkey or gives it leverage.

What Remains Open

The bill has not yet entered the Turkish parliament. If it passes before the summit, allies will face a fait accompli. If it comes after, it remains a bargaining chip. The EU’s strongest response, sanctions, requires unanimous Council approval and is constrained by the same member states now deepening arms links with Ankara. Cyprus’s gas fields, including Kronos, Aphrodite, and Glaucus, face investment delays as legal uncertainty builds (Politis). Europe’s three largest powers have each set a different price for looking away. Turkey is betting that none of them can agree on the cost of pushing back.