Why Are Turkey, Libya and Greece Disputing Mediterranean Waters?

The Eastern Mediterranean, a region known for its stunning blue waters and ancient history, has become a hotbed of geopolitical tension. At the heart of it all is a complex dispute involving Turkey, Libya, and Greece over maritime boundaries and resource rights. In essence, these three nations are clashing due to conflicting interpretations of international maritime law, historical claims, economic aspirations linked to newly discovered natural gas reserves, and strategic military interests, all converging in a geographically confined and resource-rich sea. This article will break down the core issues, explain the differing perspectives, and explore the wider implications of this ongoing disagreement.

The Foundations of Maritime Disputes: UNCLOS and its Interpretation

Understanding the crux of the dispute requires a look at the United Nations Convention on the Law of the Sea (UNCLOS), an international agreement that defines the rights and responsibilities of nations with respect to their use of the world’s oceans. While widely ratified, its application in specific, geographically complex areas like the Eastern Mediterranean is where the disagreements really begin.

What UNCLOS Says (Broadly Speaking)

UNCLOS establishes a framework for various maritime zones:

Territorial Sea: Extends up to 12 nautical miles from the coastline, giving a state full sovereignty over its waters, airspace, and seabed.
Contiguous Zone: Extends up to 24 nautical miles from the baseline, allowing states to enforce customs, fiscal, immigration, and sanitary laws.
Exclusive Economic Zone (EEZ): Stretches up to 200 nautical miles from the baseline, granting a coastal state sovereign rights for exploring and exploiting, conserving, and managing natural resources (both living and non-living) of the seabed and subsoil, and the superjacent waters. It also covers other economic activities like energy production from water, currents, and winds.
Continental Shelf: A natural prolongation of a land territory under the sea, over which a coastal state exercises sovereign rights for exploring and exploiting its natural resources. This can extend beyond 200 nautical miles under specific geological conditions.

The sticking point often arises when these zones overlap, particularly in semi-enclosed seas where multiple states have competing claims, and especially concerning islands.

The Turkish Stance: A Unique Interpretation

Turkey is a notable signatory to UNCLOS but has not ratified it. This is a significant detail, as it means Turkey doesn’t consider itself fully bound by certain aspects, particularly those concerning the maritime zones of islands. Turkey argues that:

Islands should not have a full EEZ or Continental Shelf: According to Ankara, geographical realities and the principle of “equitable delimitation” should take precedence. They contend that small islands, especially those close to a continental landmass (like many Greek islands near the Turkish coast), should not generate the same expansive maritime zones as mainland territories. Granting islands a full EEZ, they argue, would disproportionately reduce Turkey’s own maritime jurisdiction and effectively ‘trap’ its coastline.
Delimitation should be based on mainland territories: Turkey believes that the delimitation of the continental shelf and EEZ between coastal states should primarily consider their mainland coastlines, using principles of equidistance/median line where appropriate, but adjusted for proportionality and equity.
The ‘Seville Map’ is illegal: Turkey vehemently rejects what is known as the ‘Seville Map’, an unofficial but widely referenced map produced by Professor Jonathan Charney for the European Parliament in 2003. This map illustrates the maritime zones as they would be if all Greek islands were given full EEZ and continental shelf rights, effectively encircling Turkey’s southern coast. Turkey views this as an attempt to legitimise Greek overreach.

The Greek and Cypriot Stance: Strict Adherence to UNCLOS

Greece and Cyprus, on the other hand, are staunch defenders of a strict application of UNCLOS. Their position is straightforward:

Islands have full maritime rights: Under UNCLOS, islands are entitled to their own territorial seas, contiguous zones, EEZs, and continental shelves, just like mainland territories. They argue that there is no distinction in the convention between islands and continents when it comes to generating these zones.
The principle of equidistance/median line: Greece advocates for the use of the equidistance/median line principle for delimiting maritime boundaries, especially where the coasts are opposite or adjacent, taking into account all coastal features, including islands.
The right to a full EEZ: Greece considers that its many islands, including Kastellorizo (Meis Adasi in Turkish), which is geographically very close to Turkey but politically Greek, are entitled to their full maritime zones, which significantly expands Greek jurisdiction into the Eastern Mediterranean.

The Fuel for Conflict: Natural Gas Discoveries

While the legal interpretations form the bedrock of the dispute, the discovery of significant natural gas reserves in the Eastern Mediterranean has poured fuel on the fire. These energy finds have transformed the region from a purely geopolitical chessboard into a high-stakes economic battleground.

The Quest for Energy Independence

For all countries involved, the prospect of indigenous energy sources offers tremendous strategic advantages:

Reduced reliance on imports: Lessening dependency on foreign gas suppliers enhances national energy security and provides greater economic stability.
Economic benefits: Revenue from gas exports can boost national treasuries, fund infrastructure projects, and create jobs.
Geopolitical leverage: Becoming an energy producer or transit hub increases a country’s regional and international standing.

Major discoveries have been made in recent years, including the Zohr field off Egypt, Leviathan and Tamar fields off Israel, and Aphrodite off Cyprus. These discoveries have intensified the race for exploration and exploitation rights in disputed waters.

Turkey’s ‘Blue Homeland’ Doctrine

In response to these discoveries and feeling increasingly encircled by what it perceives as an anti-Turkish energy alliance (Greece, Cyprus, Israel, Egypt), Turkey has developed its ‘Blue Homeland’ (Mavi Vatan) doctrine. This is a highly assertive maritime strategy that champions Turkey’s perceived rights in the Aegean and Eastern Mediterranean.

Expanded maritime claims: The ‘Blue Homeland’ doctrine posits that Turkey has significant maritime claims, encompassing vast areas that overlap with what Greece and Cyprus consider their sovereign maritime zones. It’s not just about resource exploitation; it’s about projecting power and protecting what Ankara views as its national interests and historical rights.
Naval assertiveness: This doctrine is backed by increased naval presence and exploratory drilling activities by Turkish research vessels and warships in contested waters, often leading to standoffs with Greek and Cypriot naval forces. This demonstration of military might underlines Turkey’s resolve to enforce its claims.

The EastMed Pipeline Project

Adding another layer of complexity is the proposed EastMed Pipeline, a major project intended to transport natural gas from the Eastern Mediterranean fields (primarily from Israeli and Cypriot waters) to Europe via Greece.

Strategic implications: For Greece, Cyprus, and Israel, the pipeline represents a crucial strategic link, solidifying their energy cooperation and offering Europe a diversification of gas supply away from Russia. It also strengthens their alliance in the region.
Turkish opposition: Turkey views the EastMed Pipeline as an attempt to exclude it from the regional energy architecture and undermine its own claims. Ankara has actively opposed the project and pursued alternative routes for gas export, including through its own territory. The US withdrawing its support for the EastMed pipeline in 2022 was seen as a blow to its proponents and a partial victory for Turkey.

The Libya Factor: A Controversial Deal

The agreement signed between Turkey and the Tripoli-based Government of National Accord (GNA) in Libya in November 2019 dramatically escalated tensions. This Memorandum of Understanding (MoU) on the delimitation of maritime jurisdiction areas was highly contentious from the outset.

The Turkey-Libya MoU: What it Claims

The MoU purports to establish an EEZ boundary between Turkey’s southern coast and Libya’s northeastern coast, effectively creating a maritime corridor that cuts across an area Greece considers to be its own continental shelf and EEZ, particularly around the island of Crete.

Direct challenge to Greek claims: The agreement completely disregards the maritime zones of Greek islands like Crete, Rhodes, and Karpathos, treating them as if they have no continental shelf or EEZ that extends towards Libya. Turkey argues that this aligns with its position that islands should not generate full maritime zones, especially those far from their mainland.
Geographical contiguity: Turkey and Libya justify the deal by claiming they have adjacent or opposite coastlines that allow for such a delimitation, despite the significant presence of Greek islands in between.

International Rejection

The Turkey-Libya MoU has been widely condemned by Greece, Cyprus, Egypt, France, the EU, and the United States, among others.

Violation of international law: Critics argue that the agreement is illegal under international law, specifically UNCLOS, as it infringes upon the sovereign rights of Greece and ignores the principle that islands are entitled to their own maritime zones. They contend that the deal was signed by the GNA at a time when its authority was contested and without parliamentary approval, further undermining its legitimacy.
Escalation of tensions: The agreement was seen as a deliberate provocative act by Turkey to assert its ‘Blue Homeland’ doctrine and secure a larger share of potential energy resources, bypassing Greece and Cyprus. It immediately heightened military readiness in the region.

The Civil War in Libya

The context of Libya’s long-running civil war is crucial. Turkey’s military and political support for the GNA in Tripoli was instrumental in helping it withstand assaults from the rival Libyan National Army (LNA) led by Khalifa Haftar.

Strategic alliance: The maritime deal is seen as a quid pro quo for Turkey’s military assistance to the GNA. It cemented a strategic alliance, giving Turkey a foothold in North Africa and a partner in its Eastern Mediterranean ambitions.
Unstable foundations: However, the fact that the deal was made with a government that has since faced internal challenges and whose authority remains contested raises questions about the long-term validity and enforceability of the MoU. Any future change in government in Libya could lead to the deal’s abrogation.

Diplomatic Stalemates and Military Posturing

The deeply entrenched positions and conflicting legal interpretations have led to a recurring cycle of diplomatic standoffs, military exercises, and thinly veiled threats. Dialogue often breaks down, and the presence of naval assets in disputed areas keeps tensions consistently high.

Bilateral and Multilateral Efforts

Attempts to resolve the dispute have largely been unsuccessful:

Exploratory talks: Greece and Turkey have held numerous rounds of ‘exploratory talks’ over the years, aiming to find common ground on maritime delimitation. However, these talks frequently stall due to fundamental disagreements on what constitutes a legitimate basis for negotiation (e.g., Greece insists on UNCLOS, Turkey on ‘equity’ and ignoring island rights).
EU involvement: The European Union, with Greece and Cyprus as member states, has strongly supported their positions. It has called for de-escalation, adherence to international law, and dialogue, and has even imposed limited sanctions on Turkey for its drilling activities. However, the EU’s leverage is limited, given Turkey’s strategic importance and its complex relationship with the bloc.
NATO’s Balancing Act: As both Greece and Turkey are NATO members, the alliance is caught in a difficult position. NATO has attempted to facilitate de-confliction mechanisms to avoid accidental clashes but has largely steered clear of mediating the core maritime dispute, as it is seen as a bilateral issue.

Naval Manoeuvres and Resource Exploration

The region frequently witnesses military exercises and resource exploration activities that serve to assert claims and warn rivals.

Turkish seismic surveys: Turkey routinely dispatches seismic research vessels (like the Oruç Reis) accompanied by naval escorts into areas that Greece and Cyprus consider their EEZ. These activities are viewed by Athens and Nicosia as illegal provocations.
Greek and Cypriot counter-exercises: Greece and Cyprus respond with their own naval exercises, often involving allies like France, Egypt, and Israel, to demonstrate their resolve and their capacity to defend their sovereign rights. These manoeuvres create a high-risk environment for miscalculation.
“Show of force”: These actions are not just about collecting data or training; they are deliberate “shows of force” designed to signal intent, test red lines, and solidify territorial claims in the eyes of the international community.

The Path Forward: Diplomacy, Law, or Escalation?

Country	Claim	Key Issue	Relevant Agreements	Strategic Importance
Turkey	Claims maritime boundaries based on a narrow continental shelf and an extended Exclusive Economic Zone (EEZ) from its southern coast	Disputes over EEZ delimitation with Greece and Cyprus, contesting Greek islands’ maritime zones	Turkey does not recognise the United Nations Convention on the Law of the Sea (UNCLOS)	Access to potential hydrocarbon reserves and control over strategic sea routes
Libya	Signed a maritime boundary agreement with Turkey in 2019 to delineate EEZs in the eastern Mediterranean	Agreement contested by Greece and Egypt, seen as encroaching on their maritime zones	2019 Turkey-Libya Memorandum of Understanding on maritime boundaries	Securing maritime rights and potential energy resources in contested waters
Greece	Claims EEZs around its numerous islands, including Crete and Rhodes, based on UNCLOS provisions	Opposes Turkey’s maritime claims and the Turkey-Libya agreement, asserting sovereignty over island waters	United Nations Convention on the Law of the Sea (UNCLOS)	Protection of territorial waters, energy exploration rights, and regional security

The current situation is unsustainable in the long term. While outright military conflict has been avoided, the constant brinkmanship is costly, dangerous, and detrimental to regional stability.

The Role of International Adjudication

Many international observers and Greece itself suggest that the dispute should be resolved through international legal bodies.

International Court of Justice (ICJ): Greece has repeatedly stated its willingness to take the matter to the ICJ at The Hague, which is the principal judicial organ of the United Nations. The ICJ would provide a binding resolution based on international law.
Arbitration: Another option could be international arbitration, where parties agree to submit their dispute to an impartial third-party tribunal.
Turkish reluctance: Turkey has historically been reluctant to submit to the ICJ’s jurisdiction for maritime delimitation with Greece, preferring bilateral negotiation, but only on its own terms. Ankara fears that an ICJ ruling based on UNCLOS could disadvantage its claims, especially regarding islands.

The Need for Dialogue and De-escalation

Despite the difficulties, sustained dialogue remains essential.

Confidence-building measures: Implementing confidence-building measures, such as hotlines between military commanders, moratoria on provocative actions, and transparency regarding naval movements, could help reduce the risk of accidental clashes.
A comprehensive approach: A lasting solution will likely require a comprehensive approach that addresses not only maritime boundaries but also resource sharing mechanisms and broader regional security concerns. This might involve a regional conference that brings together all littoral states.
Pressure from external actors: The involvement of major powers like the US and the EU is crucial. They can exert diplomatic pressure, offer mediation, and underscore the importance of international law to encourage a peaceful resolution.

Ultimately, the dispute over the Eastern Mediterranean waters is a multi-faceted challenge, entwined with legal interpretations, economic ambitions, and national pride. While the stakes are high, the path to a stable and prosperous region lies in a commitment to international law, respectful dialogue, and a genuine willingness to seek compromise rather than confrontation. The alternative is continued instability and the ever-present risk of a spark igniting a wider conflict.