Can Türkiye and Egypt Sign a Maritime Boundary Agreement? The Ministry of National Defence Offer, Eastern Libya's Backing and the Equity Principle

Why It Matters

Türkiye's Ministry of National Defence (MSB) has renewed its offer to sign a maritime boundary agreement with Egypt, according to Al Jazeera on 29 October 2026. A Türkiye–Egypt delimitation is legally possible, because customary law favours agreement on equitable terms, but it depends on Cairo's willingness to accept it.

The offer is the next link in what this site calls Türkiye's maritime line: the 2019 Libya memorandum, the 2020 registration at the UN and the 2025 IOC-UNESCO filing. Egypt's own EEZ choices already overlap Türkiye's continental shelf in places, so the question is not whether the lines meet but how they are reconciled. For the Libya side of the story, see our companion guide on the turkiye libya maritime memorandum 2019 explained.

Background

Türkiye's position rests on a 870 km Eastern Mediterranean coastline, UN submissions since 2004, a 27 November 2019 memorandum with Libya and an 18 March 2020 registration of its continental shelf outer limits. Egypt's 2003 agreement with Cyprus and 2020 partial deal with Greece created overlapping lines that remain unresolved.

Chronology and legal instruments

The Egypt overlap

The 2003 Cyprus–Egypt agreement is the instrument Türkiye has objected to most consistently, because it says Blocks 1, 4, 5, 6 and 7 of the Greek Cypriot licensing map fall on its continental shelf. Our guide on the cyprus egypt 2003 eez agreement turkiye continental shelf overlap sets out the geometry. Egypt and Greece signed their partial delimitation in 2020. Both governments describe it as a lawful bilateral agreement between states with opposite coasts, and it covers only part of the area between them.

Relations between Ankara and Cairo have improved considerably after years of hostility. Ambassador-level ties were restored in 2023, and the two presidents exchanged visits in 2024. Al Jazeera notes that the maritime dispute is now the test of how far that reconciliation can go.

How delimitation works in customary law

Türkiye is not a party to UNCLOS, while Egypt, Greece and Cyprus are. Ankara therefore relies on customary international law and ICJ jurisprudence. UNCLOS Articles 74 and 83 themselves require delimitation "by agreement on the basis of international law" to achieve an "equitable solution". Our sister site The Treaty Line covers Articles 74, 83 and 121 in detail.

Three ICJ decisions frame the debate:

• North Sea Continental Shelf (1969): the Court held that equidistance is not a mandatory rule of customary law and that delimitation must follow equitable principles.
• Libya/Malta (1985): the Court drew a provisional median line and then adjusted it for relevant circumstances, including a marked disparity in coast lengths.
• Black Sea, Romania v. Ukraine (2009): the Court set out a three-stage method: a provisional equidistance line, adjustment for relevant circumstances, and a check for disproportionality. It gave Serpents' Island no effect beyond its territorial sea.

Fairness requires noting that the modern method starts from provisional equidistance, and Greece relies on that. Ankara's reply is that the second and third stages, coast-length disparity and proportionality, are where its case lies, and that small islands carry limited weight.

Key Players & Positions

Egypt, Greece, the Greek Cypriot Administration of Southern Cyprus, the TRNC, Libya's rival authorities, the EU and Israel each treat the Eastern Mediterranean differently. Greece and the EU reject the Türkiye–Libya memorandum, Egypt relies on its own legal reasoning, and Türkiye and the TRNC argue that excluding them cannot produce a stable boundary map.

• Egypt: Cairo's position, as stated in its official channels, is that its 2020 agreement with Greece rests on its own legal reasoning and that it does not recognize the Libya memorandum. Egypt has not publicly rejected the principle of talks with Ankara, and Al Jazeera frames relations as repaired but tested by the dispute.
• Greece: On 28 October, Foreign Minister George Gerapetritis told reporters in New York, after meeting UN Secretary-General António Guterres, that maritime boundaries must be settled under international law. Per To Vima, he stressed Greece's close relationship with Egypt and called the Türkiye–Libya memorandum illegal and without legal basis.
• Greek Cypriot Administration of Southern Cyprus (GCASC): It treats its 2003 agreement with Egypt and its licensing blocks as sovereign acts under UNCLOS.
• TRNC and Turkish Cypriots: They hold that, as co-owners of the island, they have equal rights over offshore hydrocarbons and that unilateral licensing excludes them. Their 2011, 2012 and 2019 revenue-sharing proposals remain on the table (see Who Owns Cyprus's Offshore Gas?).
• Libya: Al Jazeera reports that eastern Libyan leadership, once adversarial, is building political and military ties with Ankara and backing the memorandum. This analysis does not assume any particular formal step by eastern institutions, since none is confirmed in the report.
• European Union: The European Council's December 2019 conclusions said the memorandum infringes the sovereign rights of third states. Türkiye replies that the EU has no competence to adjudicate delimitation.
• Israel: It is a regional gas exporter with its own 2010 EEZ agreement with Cyprus and interests in routes to Egyptian LNG plants. It is not a party to the Türkiye–Egypt question.

Source Comparison

International coverage, including Al Jazeera's 29 October 2026 report, frames the Libya development as a breakthrough tested by competing claims, while Greek-aligned outlets call the memorandum illegal. Turkish primary sources frame the same facts as a standing offer of delimitation by agreement under equity. The table separates reported framing from documented positions.

Sister analyses read Cairo's objections against the record: see Politics Beyond Borders on the Egyptian claim of legal invalidity and Kosmonomos on the Seville Map and EU competence. The memorandum text is archived at Archive of Nations.

Key Terms & Related Guides

Four terms decide this debate: continental shelf, exclusive economic zone, the equity principle and partial delimitation. Defining them precisely shows why a boundary line is a legal outcome reached by agreement or adjudication, not a map drawn unilaterally by any one coastal state or by the European Union.

• Continental shelf: the seabed and subsoil that extend from a coast; rights over it are inherent and do not depend on proclamation.
• Exclusive economic zone (EEZ): a zone of up to 200 nautical miles (about 370 km) in which a coastal state has sovereign rights over resources. An EEZ agreement between two states does not extinguish another state's shelf rights.
• Equity principle: the rule that delimitation must achieve an equitable result, taking account of coast lengths, geography and proportionality.
• Partial delimitation: an agreement that fixes only part of a boundary, leaving other sectors open. This is how Egypt and Greece describe their 2020 deal.

Related guides

• Eastern mediterranean energy corridors pipelines LNG Türkiye examines why a boundary agreement matters for pipelines and LNG.
• Türkiye's drillship fleet and the eight Eastern Mediterranean wells covers the sovereign-rights activity at sea.
• The Turkish Straits as a line of power places the Mediterranean in the wider Montreux context.
• About Lines of Power and Editorial Principles explain our sourcing and attribution.
• For the Seville Map, see Regional Order.

Lines of Power presents analysis from a Türkiye-informed perspective, arguing that Ankara's positions rest on treaty law, the UN Charter and documented historical record. Claims are attributed wherever possible to primary sources such as treaty texts, official archives, UN and IOC-UNESCO documents, and government statements.