Türkiye Reportedly Prepares Maritime Bill as Aegean and Cyprus Disputes Resurface

By Bosphorus News Geopolitics Desk

Türkiye is reportedly preparing legislation that would place Ankara's maritime jurisdiction claims in the Aegean Sea and Eastern Mediterranean on a clearer domestic legal footing, a step that could sharpen long-running disputes with Greece and Cyprus over islands, energy resources and contested maritime zones.

Bloomberg reported on May 8 that Ankara was preparing to submit a bill to parliament, citing people familiar with the matter. The report has not been officially confirmed by Türkiye, and no date has been set for the bill's submission or parliamentary debate.

If submitted, the draft would not create a maritime settlement or resolve competing claims with Greece and Cyprus. Its significance would lie elsewhere. Türkiye would be moving a long-standing diplomatic and legal position into domestic law at a time when maritime maps, offshore energy plans and competing legal narratives are again moving to the centre of the Eastern Mediterranean agenda.

Türkiye has long argued that Greek islands should not generate continental shelf and exclusive economic zone entitlements equivalent to mainland coastlines, a position Athens rejects under the United Nations Convention on the Law of the Sea. Türkiye is not a party to that convention, which Greece and the Greek Cypriot administration cite as the main legal framework for maritime zones.

Domestic legislation would strengthen Ankara's internal legal position, but it would not by itself settle maritime delimitation disputes with other states. That distinction matters because the reported bill would sit inside an already active sequence of maps, diplomatic objections, European Union platforms and competing claims over who has the right to define maritime space in the Aegean and Eastern Mediterranean.

Türkiye's Foreign Ministry said on April 16, 2025, that parts of the Maritime Spatial Plan declared by Greece violated Türkiye's maritime jurisdiction areas in both the Aegean Sea and the Eastern Mediterranean. Ankara said unilateral steps would have no legal effect for Türkiye and announced that its own maritime spatial planning map would be submitted to relevant United Nations and UNESCO-linked bodies.

The dispute sharpened again in November 2025, when Foreign Ministry spokesperson Öncü Keçeli objected to the Greek maritime spatial planning map appearing on the European Commission's MSP platform with reference to "competent Greek authorities." Keçeli said the map overlapped with Türkiye's claimed maritime jurisdiction areas and argued that Greece was trying to use an EU platform to legitimise claims not yet formally declared in the Eastern Mediterranean.

Türkiye's own Marine Spatial Planning map, coordinated through Ankara University's National Center for the Sea and Maritime Law, was announced in April 2025 and later made available through the international MSPGlobal platform. The map presents Türkiye's view of its maritime planning areas and notes that Ankara has declared an exclusive economic zone only in the Black Sea, while maintaining different territorial sea limits in the Aegean, Eastern Mediterranean and Black Sea.

Greece protested Türkiye's maritime spatial plan in June 2025, arguing that the map lacked legal basis and claimed areas under Greek jurisdiction. Athens has also submitted its own maritime spatial planning framework to the European Union, while insisting that its plans do not amount to unilateral delimitation of exclusive economic zones.

That map dispute forms the official background against which the reported bill is now being read in Athens, Nicosia and Brussels. If confirmed, the proposed legislation would not introduce Türkiye's maritime claims for the first time. It would give them a more formal domestic legal form after a year in which maritime planning maps became a visible part of the Türkiye-Greece dispute.

The Cyprus dimension gives the reported bill wider significance. Bloomberg said the draft would also cover the rights of Türkiye and the Turkish Cypriot administration over potential offshore energy resources. That places the reported legislation directly inside the Cyprus file, where offshore gas, recognition, sovereign rights and Turkish Cypriot participation have been disputed for more than a decade.

The Republic of Cyprus is internationally recognised as exercising sovereign rights over offshore blocks in its declared exclusive economic zone. Ankara rejects arrangements made without Turkish Cypriot participation and argues that energy deals around the island cannot be treated as legitimate while the Turkish Cypriot side is excluded from decision-making and revenue-sharing.

The timing is also sharp. The Bloomberg report landed as Greek Cypriot leader Nikos Christodoulides and Turkish Cypriot President Tufan Erhürman met in the UN buffer zone in Nicosia, agreeing on four practical steps while leaving the deeper disputes over format, status and political equality unresolved. In a Bosphorus News analysis published after the meeting, Murat Yıldız argued that Cyprus talks still return to the status dispute beneath every new UN move.

That link between maritime jurisdiction and Cyprus is not incidental. The Eastern Mediterranean energy map has been shaped by offshore discoveries near Cyprus, Israel and Egypt, but Türkiye has consistently argued that regional energy structures were built in ways that exclude both Ankara and Turkish Cypriots.

Türkiye's 2019 maritime boundary agreement with Libya's Tripoli-based government remains central to that posture. Greece, Cyprus and the European Union rejected the accord, while Ankara treated it as a legal and strategic response to what it saw as an attempt to confine Türkiye to a narrow maritime space in the Eastern Mediterranean.

The reported bill would therefore land in a region already defined by overlapping legal claims. Greece and Cyprus lean on the United Nations Convention on the Law of the Sea, European Union frameworks and internationally recognised exclusive economic zones. Türkiye relies on continental shelf arguments, equitable delimitation principles, its Libya agreement and the claim that islands cannot automatically generate full maritime zones against a longer mainland coast.

The political tone in Ankara had already hardened before the Bloomberg report. On May 5, Devlet Bahçeli, leader of the Nationalist Movement Party and a close coalition partner of President Recep Tayyip Erdoğan, framed the maritime, energy and Cyprus files as a single strategic package during remarks to parliament.

"Greece acting with maximalist demands does not mean they are entitled under the law," Bahçeli said. He also said that the Greek Cypriot administration speaking on behalf of the entire island did not create legitimacy for itself, and warned that steps ignoring Türkiye's maritime claims or Turkish Cypriot rights would face a strong response.

Bahçeli's remarks do not constitute a government announcement of legislation, but they show the political environment in which the reported bill emerged. His warning also targeted deeper security cooperation involving France, Greece, Cyprus and Israel, a line that connects the maritime dispute to the broader defence alignments taking shape across the Eastern Mediterranean.

Washington and Brussels are now important to watch. Bloomberg reported that the United States has urged Athens and Ankara to maintain dialogue over maritime disputes. The European Union has previously threatened Türkiye with sanctions over drilling activity in the Eastern Mediterranean after complaints from Greece and Cyprus, but neither Washington nor Brussels had issued a new public statement on the reported bill by the time of publication.

The immediate question is whether the reported bill appears in parliament and how Ankara defines its scope. A narrowly framed domestic legal measure would still carry diplomatic weight, but a bill explicitly linking maritime jurisdiction, natural gas resources and Turkish Cypriot rights would be read in Athens and Nicosia as a wider challenge to the regional energy order.

The larger issue is that the Eastern Mediterranean now contains several overlapping tracks at once: Türkiye's maritime spatial planning map, Greece's EU-linked MSP filings, Cyprus' offshore gas blocks, the unresolved status of Turkish Cypriots, the 2019 Türkiye-Libya maritime accord and growing security coordination among Greece, Cyprus, Israel, France and the United States.

If the bill is submitted, the issue will move beyond the current exchange of maps, objections and legal positions. Türkiye would be placing its maritime claims inside domestic law at a time when Greece is using European platforms to advance its own maritime planning, Cyprus is trying to revive the UN track, and offshore energy remains tied to the unresolved status of Turkish Cypriots.

The reported legislation would not settle the Eastern Mediterranean dispute. It would move Ankara's maritime position from diplomatic argument into domestic law, giving Türkiye's claims a more permanent form just as Greece, Cyprus and the European Union are trying to consolidate their own maps, energy plans and legal narratives.