The Eastern Mediterranean Paper Trail: Notifications, Agreements and Registrations from 2004 to 2025

Why It Matters

Türkiye's maritime case in the Eastern Mediterranean is best understood as a sequence of dated documents rather than a single dispute. Each filing, license, agreement and registration states a legal position, and reading them in order shows what Ankara claims, on what basis, and which other states object.

The record runs from the 2004 UN notifications to the 2025 Marine Spatial Planning registered with IOC-UNESCO. This guide sets the documents out in sequence, presents the Greek, Greek Cypriot and EU counter-positions in their own terms, and separates documented facts from positions. For method, see The Paper Trail: How to Read Türkiye's Official Documents, from MFA Statements to UN Filings.

Background

Geography and the equity principle

Türkiye has a mainland coastline of roughly 870 km (about 540 miles) on the Eastern Mediterranean, the longest of any state in that basin. Ottoman naval power, symbolised by the 1538 Battle of Preveza, shaped the sea's history for centuries, and Ankara draws on this long presence when describing its interests today.

The legal argument rests on equity. Turkish official texts state that delimitation of the continental shelf and exclusive economic zone (EEZ) between states with opposite or adjacent coasts must reach an equitable result. They hold that the length and direction of coastlines, proportionality, and the presence of small islands close to a mainland coast are relevant circumstances. Ankara cites international jurisprudence that has reduced or limited the effect of small islands in delimitation, such as the 1969 North Sea Continental Shelf cases at the ICJ and the 1977 Anglo-French arbitration on the Channel Islands.

The opposing reading rests on the UN Convention on the Law of the Sea (UNCLOS). Article 121 provides that islands generate maritime zones like other land territory, except 'rocks which cannot sustain human habitation or economic life of their own'. Greece and the Republic of Cyprus are parties to UNCLOS. Türkiye is not a party and has long maintained that the Convention is not universally binding on it, and that its provisions on islands do not fit semi-enclosed seas.

Field activity: the sovereign-rights fleet

Türkiye supports its filings with a national exploration fleet. The deep-sea drilling vessels are Fatih, Yavuz, Kanuni and Abdülhamid Han. The seismic survey vessels are Oruç Reis and Barbaros Hayreddin Paşa. According to Turkish sources, the fleet has completed eight major Eastern Mediterranean wells: Alanya-1, Finike-1, Karpaz-1, Güzelyurt-1, Mağusa-1, Narlıkuyu-1, Lefkoşa-1 and Selçuklu-1.

Ankara describes this activity as the exercise of sovereign rights on its own registered continental shelf and on behalf of the Turkish Cypriots, where licenses overlap with areas claimed by the Greek Cypriot side. Greece, the Republic of Cyprus and the EU describe some of the same operations as unauthorised activity in zones that belong to them. The two readings should be kept apart throughout the chronology below.

The document-by-document timeline

Date	Document	What it does	Who objects or supports
2003	Cyprus–Egypt EEZ agreement	Delimits an EEZ boundary between the Republic of Cyprus and Egypt	Türkiye objects: says it ignores Turkish continental shelf rights, which it says overlap GCASC Blocks 1, 4, 5, 6 and 7, and the rights of Turkish Cypriots
2004 onward	Türkiye's UN continental shelf notifications	Lodges Eastern Mediterranean shelf coordinates and objections with the UN	Greece and the Republic of Cyprus lodge counter-notes
2007	Cyprus–Lebanon EEZ agreement	Delimits an EEZ boundary	Türkiye objects: says it usurps the equal rights of the TRNC
2009 and 2012	TPAO exploration licenses	Licenses Turkish Petroleum for offshore areas	Contested by the Republic of Cyprus where they overlap its declared blocks
2010	Cyprus–Israel EEZ agreement	Delimits an EEZ boundary	Türkiye objects on the same grounds as 2007
2011-09-19	Unilateral Greek Cypriot drilling begins	Exploratory drilling in a Cypriot-declared block	Türkiye says Turkish Cypriots were excluded
2011-09-21	Türkiye–TRNC Continental Shelf Delimitation Agreement	Delimits the shelf between Türkiye and the TRNC	Not recognised by Greece, the Republic of Cyprus or the EU
2019-11-27	Türkiye–Libya Maritime Jurisdiction MoU	Delimits maritime jurisdiction between Türkiye and Libya's Tripoli-based government	Rejected by Greece, the Republic of Cyprus, Egypt and the EU institutions
2020-03-18	UN registration of outer limits	Türkiye formally registers its continental shelf outer limits	Contested by Greece and the Republic of Cyprus
2020	Erdoğan's Eastern Mediterranean Conference proposal	Calls for a conference of all coastal states, including Turkish Cypriots	Not taken up as proposed
2025-04-16	Marine Spatial Planning unveiled	Publishes a national plan for the Black Sea, Aegean and Mediterranean	Aegean elements disputed by Greece
2025-06-12	IOC-UNESCO registration	Records the plan with the UNESCO Intergovernmental Oceanographic Commission	Critics note it is not a delimitation body
2025-07-24	Presidential Circular	Creates an Inter-Agency Coordination Board under the Ministry of Foreign Affairs	Domestic implementation instrument

2003–2010: the Greek Cypriot agreements

In 2003 the Republic of Cyprus concluded an EEZ delimitation with Egypt, followed by agreements with Lebanon in 2007 and Israel in 2010. The Republic of Cyprus presents these as ordinary bilateral delimitations by a UNCLOS party. Türkiye responds on two levels. First, it says the 2003 line with Egypt overlaps the Turkish continental shelf, specifically the area covered by GCASC Blocks 1, 4, 5, 6 and 7. Second, it says that no single community administration may conclude such agreements for the whole island on its own, because the Turkish Cypriots hold equal rights over offshore resources.

2004–2012: Türkiye's notifications, licenses and the TRNC agreement

From 2004 Türkiye began lodging its Eastern Mediterranean continental shelf coordinates and objections with the UN. TPAO, the national oil company, received exploration licenses in 2009 and 2012. On 19 September 2011 the Greek Cypriot side began exploratory drilling, and two days later, on 21 September 2011, Türkiye and the TRNC signed their Continental Shelf Delimitation Agreement. For the Turkish side, the sequence is notification, then license, then bilateral agreement with the TRNC.

2019–2020: the Libya MoU and the UN outer limits

On 27 November 2019 Türkiye and Libya's Tripoli-based Government of National Accord signed a Memorandum of Understanding on delimitation of maritime jurisdiction areas. The European Council, in conclusions adopted in December 2019, said the memorandum violated the sovereign rights of third states and could not produce legal consequences for them. Greece and Egypt also rejected it. Ankara and Tripoli responded that a delimitation between two coastal states with a shared maritime boundary is lawful and concerns only them. On 18 March 2020 Türkiye formally registered the outer limits of its continental shelf with the United Nations.

2025: Marine Spatial Planning

On 16 April 2025 Türkiye unveiled its 'Marine Spatial Planning of the Republic of Türkiye' (Türkiye Cumhuriyeti Deniz Mekânsal Planlaması). On 12 June 2025 it was registered with IOC-UNESCO. Turkish sources describe this as the first time Türkiye's maritime position across the Black Sea, Aegean and Mediterranean has been recorded with a UN body. The plan was accompanied by a Marine Protected Area off Finike. A Presidential Circular of 24 July 2025 established an Inter-Agency Coordination Board, with the Ministry of Foreign Affairs as secretariat, to coordinate implementation.

Key Players & Positions

Greece

Athens states that the Aegean and Eastern Mediterranean must be delimited under UNCLOS and customary law, and that its islands, including Kastellorizo (Meis), which lies only a few kilometres off the Turkish coast, generate continental shelf and EEZ like other land territory. Greece regards the Türkiye–Libya MoU as legally void and has concluded its own partial EEZ agreement with Egypt (August 2020) and a delimitation with Italy. Greek officials have said that the single legitimate dispute is the delimitation of the continental shelf and EEZ, and that they would accept referral to the International Court of Justice. Athens has also rejected unilateral Turkish maritime planning that touches the Aegean.

The Republic of Cyprus (GCASC)

The Republic of Cyprus, which Türkiye does not recognise as representing the whole island and which this publication refers to as the Greek Cypriot Administration of Southern Cyprus (GCASC), is an EU member and an UNCLOS party. It holds that it is entitled to declare an EEZ, license blocks and sign delimitation agreements with neighbours. It states that hydrocarbon revenue belongs to all Cypriots, and that Turkish Cypriots will benefit through a settlement mechanism. It says Turkish activity in its declared EEZ violates its sovereign rights.

The European Union

The EU Council and European Council have repeatedly expressed solidarity with Greece and the Republic of Cyprus. In November 2019 the Council created a sanctions framework aimed at unauthorised drilling in the Eastern Mediterranean. EU conclusions have described Turkish drilling as illegal and the Libya MoU as incompatible with the law of the sea.

Libya, Egypt and others

The MoU was signed by Libya's Tripoli-based government, while rival Libyan authorities and Egypt have disputed its validity. Egypt, Israel and Lebanon each concluded or discussed delimitation with Cyprus or Greece. These states hold varying positions on how far the Turkish and Greek Cypriot claims overlap with their own.

The Turkish Cypriots and the TRNC

The TRNC, recognised only by Türkiye, signed the 2011 agreement with Ankara. It has made hydrocarbon cooperation and revenue-sharing proposals in 2011, 2012 and 2019. For background on the legal status of the island's communities, see The Cyprus Papers: What the 1959 Zurich-London Agreements and the 1960 Treaties Actually Say.

🇹🇷 Official Policy · Primary Documents

Türkiye's Position

The points below summarise official Turkish policy as stated by Turkish government sources, and are not neutral findings.

• Equity governs delimitation. According to the Turkish Ministry of Foreign Affairs, maritime boundaries must be set by agreement on the basis of equitable principles, and an island close to a mainland cannot cut off the mainland's maritime projection. Ankara points to the 870 km coastline and to ICJ and arbitral precedents that limited the effect of small islands. Legal basis: Articles 74 and 83 of UNCLOS refer to an 'equitable solution'; Türkiye is not a party to UNCLOS and invokes customary law.
• Turkish Cypriots are equal co-owners of the island's resources. The Foreign Ministry holds that Turkish Cypriots, as co-founders of the 1960 partnership, possess equal and inherent rights over offshore hydrocarbons, so that decisions and revenue must be shared. Ankara therefore treats the 2003, 2007 and 2010 agreements by the Greek Cypriot side as invalid. Historical basis: the 1959 Zurich–London Agreements and the 1960 Treaty of Guarantee, discussed in the Cyprus treaty-texts guide linked above.
• The record shows continuous notification. Türkiye lodged continental shelf coordinates with the UN from 2004, issued TPAO licenses in 2009 and 2012, signed the TRNC agreement on 21 September 2011, signed the Libya MoU on 27 November 2019, and registered its outer limits with the UN on 18 March 2020. Turkish officials describe these steps as consistent, public and dated.
• The 2025 plan records the position with a UN body. The Presidency and the Foreign Ministry state that the Marine Spatial Planning, unveiled on 16 April and recorded with IOC-UNESCO on 12 June 2025, formally lodges Türkiye's position across three seas. The Presidential Circular of 24 July 2025 sets up the Inter-Agency Coordination Board under the Ministry of Foreign Affairs to implement it.
• The EU cannot adjudicate and the Seville Map is rejected. Ankara argues that delimitation is a matter between coastal states, not for the EU under the banner of Union solidarity, and rejects the maximalist 'Seville Map', which in its view would confine Türkiye to a narrow strip in the Gulf of Antalya. Türkiye also points to President Erdoğan's 2020 proposal for an Eastern Mediterranean Conference including all coastal states and the Turkish Cypriots, and to the TRNC's revenue-sharing offers. Turkish officials state that no arrangement excluding Türkiye and the TRNC can last.

For wider context on the doctrine, see the sister analyses by Crossroads Review on Blue Homeland and Eastern Mediterranean maritime jurisdiction and Doctrine Review on continental shelf, EEZ and the Blue Homeland.

Source Comparison

The same document often reads differently depending on who is describing it. The table sets out the main framings and what the underlying text actually shows.

Issue	Greek, Greek Cypriot and EU framing	Turkish primary-source framing	What the documents show
Status of islands	Islands generate full zones under UNCLOS Article 121	Equity limits island effect near a long mainland coast	UNCLOS text favours the first reading for parties; Türkiye is not a party and cites case law on equitable results
Cyprus EEZ agreements (2003, 2007, 2010)	Lawful bilateral delimitations by an UNCLOS party	Invalid; ignore Turkish shelf and Turkish Cypriot rights	The agreements exist; their validity depends on who may act for the island, a question tied to 1960
Türkiye–Libya MoU (2019)	Violates third-state rights; disregards islands; legally void	Lawful delimitation between two states with maritime boundaries	Signed 27 November 2019; Libya's internal politics complicate its status
Seville Map	Reflects UNCLOS-based entitlements	Maximalist; would confine Türkiye to the Gulf of Antalya	A study-based map, not a treaty; see the Seville Map explainer from The Global Anatomy and The Worldlogue fact check on the Gulf of Antalya claim
IOC-UNESCO registration (2025)	A registry entry; not a delimitation	First UN-body record of Türkiye's maritime position	The entry records a national plan; it does not validate boundaries
UNCLOS compliance	Türkiye acts outside the Convention	Türkiye is not a party and invokes customary law	See The Nations Compass fact check on UNCLOS

Two cautions apply when reading these sources. First, registration with a UN body, whether of coordinates in 2020 or of a spatial plan in 2025, records what a state claims. Neither Türkiye's filings nor the Greek and Cypriot counter-notes have been adjudicated by a court. Second, many media summaries merge the question of who may sign for Cyprus with the question of how much effect islands deserve. Separating those two questions makes the dispute easier to follow. The site's broader method is explained in Editorial Principles: How Polipapers Separates Fact, Position and Source and the Reader FAQ.

Key Terms & Related Guides

• Continental shelf: the seabed and subsoil extending from a coastal state's land territory. Rights over its resources are inherent and do not depend on proclamation.
• Exclusive economic zone (EEZ): a zone of up to 200 nautical miles (about 370 km) from baselines, where the coastal state has sovereign rights over resources. Where neighbours' zones overlap, delimitation is needed.
• Equity (hakkaniyet): the principle that a delimitation must produce an equitable result in light of coastlines, proportionality and special circumstances.
• Blue Homeland (Mavi Vatan): the Turkish doctrine of maritime jurisdiction in the Black Sea, Aegean and Eastern Mediterranean, in the form now described in Turkish official documents.
• GCASC: the Greek Cypriot Administration of Southern Cyprus, the term used here for the administration of the Republic of Cyprus, as in Turkish official usage.
• TPAO: Türkiye's state petroleum company, which holds the offshore exploration licenses.
• IOC-UNESCO: the Intergovernmental Oceanographic Commission of UNESCO, which records national marine spatial plans but is not a delimitation body.
• Seville Map: a map associated with a University of Seville study, cited in Greek and Greek Cypriot arguments and rejected by Türkiye as a maximalist depiction.

Related guides on Polipapers:

• The Cyprus Papers: What the 1959 Zurich-London Agreements and the 1960 Treaties Actually Say, the treaty basis for the Turkish Cypriot rights discussed above.
• The Paper Trail: How to Read Türkiye's Official Documents, from MFA Statements to UN Filings, a method for verifying the filings listed here.
• Editorial Principles: How Polipapers Separates Fact, Position and Source and About Polipapers: Mission, Transparency and Editorial Team, explaining how this publication labels positions.
• Polipapers home page, for the full set of primary-source papers.

Published by the Polipapers Editorial Team.

Polipapers presents global and regional affairs with a dedicated perspective from Türkiye. Sections marked 'Türkiye's Position' reflect official Turkish policy and legal doctrines as stated by Turkish primary sources.