Turkey and Israel are no longer separated only by rhetoric and episodic diplomatic crises. Across the Eastern Mediterranean and beyond, the relationship is increasingly interpreted—by officials, lawmakers and analysts in both camps—as a structural rivalry that touches maritime law, naval posture, energy and data connectivity, and the management of conflicts from Gaza to Syria and the Red Sea.
What makes the current phase distinct is the way maritime issues have moved from being a compartmentalised technical dispute into a connective tissue between theatres. In this reading, legal arguments over exclusive economic zones (EEZs), submarine cable routes, drilling blocks, and “navigation notices” are not isolated. They are instruments of pressure and signalling—used alongside trade measures, security partnerships, and proxy competition in adjacent conflict zones.
Maritime tensions therefore matter not just because they risk incidents at sea, but because they sit at the intersection of broader strategic goals: Turkey’s pursuit of strategic depth and route centrality; and Israel’s drive to preserve freedom of action and consolidate partnerships that anchor its regional posture.
Rivalry by design: why Ankara and Jerusalem now read each other as strategic competitors
The present contest is frequently described as a clash of “interests”, but in practice it is also a clash of organising principles. Turkish regional policy in the Eastern Mediterranean is often framed in Ankara as the defence of sovereign rights and maritime entitlements; in Israel and among several of Israel’s partners it is increasingly interpreted as a deliberate effort to reshape the region’s operating rules and the geography of connectivity.
This helps explain why arenas that appear unrelated are increasingly treated as one system. Disputes in the Aegean and around Cyprus are read alongside Turkey’s roles in northern Syria and Libya, its expanding footprint in the Horn of Africa, and its positioning on Red Sea trade routes. The common thread is not merely military presence, but the operationalisation of geography—straits, shelves, cables, pipelines and corridors—as strategic assets.
For Israel, this “systems” interpretation has practical consequences. Subsea infrastructure linking Israel to Europe via Cyprus and Greece, or supporting regional energy resilience, crosses waters where Turkey contests jurisdictional arrangements. As a result, maritime risk is no longer a niche concern for navies and lawyers; it becomes a factor in procurement planning, intelligence cooperation and the politics of regional alignment.
The sea as pressure theatre: law, maps and naval presence from the Aegean to Cyprus
UNCLOS, the 12-nautical-mile question and calibrated escalation
A core legal asymmetry underpins several Eastern Mediterranean disputes: Greece is a party to the UN Convention on the Law of the Sea (UNCLOS), while Turkey is not. This matters because UNCLOS codifies, among other rules, a coastal state’s ability to extend territorial waters up to 12 nautical miles (nmi) under defined conditions. Turkey’s refusal to accede has been repeatedly explained as strategic rather than technical, linked to Ankara’s objections to how the 12 nmi rule would apply in semi-enclosed seas with dense island geography.
The dispute is not theoretical. In 1995, Turkey’s parliament authorised the government to treat a unilateral Greek extension of territorial waters in the Aegean beyond 6 nmi as a cause of war—a stance widely referenced in diplomatic and parliamentary records and still regularly invoked in Greek and European debate. See, for example, recent reporting and discussion of the continued “war threat” in the context of Ankara–Athens talks and Greek statements on territorial waters. Reuters (16 January 2026) and AP (February 2026) both describe the issue as a persistent strategic irritant.
From an operational perspective, legal disagreement becomes leverage when paired with routines of maritime signalling: research or survey activity escorted by naval units, frequent navigational warnings, and “normalisation” of contested practice. The point is often less immediate extraction than establishing an enduring presence and shaping risk perceptions for commercial actors—energy firms, cable contractors and shipping.
Turkey’s “Blue Homeland” (Mavi Vatan) doctrine is commonly cited as the conceptual frame for this posture—an approach to maritime space that treats the Black Sea, Aegean and Eastern Mediterranean as a single strategic domain. A range of research institutions have analysed the doctrine’s origins and its role in Ankara’s push for strategic autonomy, including IFRI (29 April 2021) and SWP Berlin (6 September 2024).
Cyprus as an operational test bed
Cyprus remains the most mature arena where maritime contestation meets hard security. Turkish challenges to the Republic of Cyprus’ maritime agreements and exploration activity—paired with the political reality of the island’s division—create a sustained environment of uncertainty that affects investors, planners and governments.
In parallel, Israel’s defence cooperation with Cyprus and Greece has become a visible irritant in Ankara’s threat perceptions. The acquisition by Cyprus of advanced air and missile defence systems (including Israeli-origin solutions) is widely treated as more than procurement: it is read as strategic alignment and interoperability building in a region where naval and air forces operate in close proximity.
This dynamic is highlighted in the second source text provided for this assignment, which frames Cyprus not simply as a political dispute but as an operational platform in the Eastern Mediterranean—intersecting with surveillance, anti-ship coverage, and the protection of key infrastructure.
Energy and connectivity: pipelines, power cables and the geopolitics of routes that bypass Turkey
EastMed pipeline debates and the politics of “bypass”
Few projects illustrate the strategic meaning of routes better than the recurring debates around the proposed East Mediterranean (EastMed) gas pipeline. The concept—linking Eastern Mediterranean gas to European markets via Cyprus and Greece—has repeatedly been invoked by supporters as a diversification tool and by opponents as an expensive, technically difficult project that risks inflaming regional disputes.
The project has moved in and out of political favour over the past decade, including shifts in US signalling and recurring questions about costs and viability. Recent reporting suggests the idea has not disappeared, even as alternatives proliferate. Kathimerini (6 November 2025) reported renewed discussion by regional ministers, while energy analyses continue to flag major technical and commercial hurdles.
For Turkey, the significance is less the pipeline’s immediate feasibility than its political intent: a connectivity architecture that treats Ankara as avoidable rather than indispensable. For Israel and several partners, the same “bypass” logic is attractive precisely because it reduces dependence on a single transit state and embeds the relationship in multilateral infrastructure.
The Great Sea Interconnector and submarine infrastructure as strategic assets
If gas pipelines remain contested and uncertain, electricity and data connectivity offer a more pragmatic—though still geopolitically exposed—path. The Great Sea Interconnector project (a subsea electricity link designed to connect the grids of Greece, Cyprus and Israel) is framed by sponsors as an energy security measure: Cyprus is the only EU member without an electricity interconnection, and Israel is effectively an “electricity island” in grid terms. The project is managed by the Greek grid operator IPTO and presented as a European Project of Common Interest. IPTO’s project overview sets out the intended route and rationale.
The engineering ambition illustrates the stakes. Reuters has described the project as a €1.9 billion subsea cable that could become among the world’s longest and deepest high-voltage lines (around 1,240 km and up to 3,000 metres depth), while also noting delays and scrutiny, including an investigation by European prosecutors into possible wrongdoing. Reuters (4 September 2025).
This is where maritime tension becomes concrete: submarine cables and power links are physically fixed, difficult to reroute quickly, and vulnerable to both legal contestation and operational intimidation. The second source text provided for this assignment explicitly treats such infrastructure as a strategic asset whose vulnerability cannot be separated from maritime jurisdictional disputes.
Beyond the Levant: Gaza, Syria and the risk of spillover into maritime confrontation
Gaza: political sponsorship, institutions and post-war red lines
The Israel–Turkey rivalry is not reducible to maritime disputes; it is amplified by political divergence on Gaza. Israel’s policy is anchored in the treatment of Hamas as an existential security threat. Turkey’s leadership, by contrast, has publicly defended Hamas in political terms and positioned itself as a prominent advocate for international institutional pathways, including support for UNRWA.
The third source text provided for this assignment argues that Gaza could become a direct friction point if Turkey seeks a formal role in post-war governance or stabilisation arrangements—an outcome Israeli decision-makers have signalled as unacceptable. Whether or not such proposals mature, their diplomatic effect is already apparent: they harden alignments in the Eastern Mediterranean, strengthen incentives for Israel to double down on partnerships with Greece and Cyprus, and widen the political gap with Ankara.
Syria: deconfliction under strain
Syria is the second non-maritime theatre with direct implications for maritime risk. Turkey and Israel pursue markedly different preferred end states in Syria, and both operate—directly or indirectly—through air power, intelligence and local partners. The core danger is not a deliberate choice for war, but the accumulation of miscalculation risk as military activity becomes denser and political trust erodes.
In practical terms, deterioration in Syrian deconfliction increases the probability of retaliatory cycles that can spill over into maritime posturing: heightened naval readiness, expanded patrol patterns, and more aggressive signalling around contested infrastructure. This is one reason the rivalry is best understood as multi-domain: events on land and in the air can shape behaviour at sea.
The southern arc: Libya corridors, the Red Sea and the Horn of Africa as a single competitive system
Libya’s maritime memorandum and the operationalisation of claims
Turkey’s 2019 maritime memorandum with Libya’s Tripoli-based authorities remains a key node in Eastern Mediterranean geopolitics. The agreement delineated a corridor across the Mediterranean that intersects with Greek claims near Crete and challenges prevailing interpretations of maritime entitlements based on islands.
The European Union has repeatedly stated that the 2019 memorandum “infringes upon the sovereign rights of third states” and “does not comply with the Law of the Sea.” Kathimerini summarising the EU position (3 October 2022) provides the text of that rejection.
For Israel, Libya is not merely a distant dispute between Ankara and Athens. It is part of a broader pattern in which Turkey uses legal instruments, political partnerships and selective operational steps to transform disputed maps into lived realities—affecting confidence in infrastructure projects and shaping the region’s risk calculus.
Somalia/Somaliland, offshore drilling and the Gulf of Aden
The rivalry’s southern arc now runs through the Horn of Africa—where maritime geography, basing access and offshore resources meet the security of one of the world’s most sensitive sea lines of communication: the Gulf of Aden and the approaches to the Red Sea.
Two recent developments underscore the shift.
First, Israel formally recognised Somaliland as an independent state on 26 December 2025—an unprecedented move by a UN member that triggered strong regional and international reaction. Reuters (26 December 2025) reported the recognition and the subsequent backlash.
Second, Turkey has moved to operationalise its energy partnership with Somalia. On 15 February 2026, Reuters reported that Turkey dispatched a deep-sea drilling ship to Somalia in its first overseas mission, expected to be escorted by three Turkish naval warships. Reuters (15 February 2026).
Taken together, these steps turn the Horn of Africa into an arena where Ankara’s preference for supporting Somalia’s territorial integrity and Tel Aviv’s pursuit of strategic access and partnerships can collide. Crucially, this collision is maritime in character: it concerns offshore blocks, port relationships, naval escorts and the monitoring of traffic in and out of the Red Sea.
What this means for partners: the 3+1 framework, US strategy and regional architecture
The second source text provided for this assignment reflects a growing political narrative among lawmakers in Israel, Greece, Cyprus and the United States: that Turkey has become a principal source of instability in the Eastern Mediterranean and that multilateral coordination—often described as the “3+1” (Israel–Greece–Cyprus plus the US)—offers a stabilising counterweight.
Whatever the merits or limitations of that framing, the policy direction is clear. Energy resilience initiatives such as the Great Sea Interconnector are being packaged as strategic projects, not simply infrastructure; defence interoperability is becoming more visible through exercises, procurements and political signalling; and US legislative attention continues to treat Eastern Mediterranean coordination as an institutional asset.
For Washington, the problem is that Turkey and Israel are both long-standing partners, yet their rivalry increasingly touches core American interests: NATO cohesion; regional crisis management; and the security of maritime corridors connecting the Mediterranean to the Red Sea and the Indo-Pacific trade system.
Europe faces a related dilemma. Many European governments have sought to compartmentalise disputes—separating the Aegean from Cyprus, Libya from Syria, and the Red Sea from Eastern Mediterranean energy. But the practical logic of maritime competition resists compartmentalisation: submarine cables, drilling corridors and naval patrol patterns do not respect institutional silos.
The result is an Eastern Mediterranean in which the sea is not a backdrop, but an arena where competing concepts of order are tested—law versus leverage, connectivity versus centrality, and multilateral infrastructure versus corridor politics.
In that environment, the most immediate risk is not a declared war. It is the gradual accumulation of friction points: an incident around a survey vessel, a contractor deterred from laying cable, a crisis in Gaza that spills into regional alignments, or a misread move in Syria that triggers a cycle of signalling at sea.
The strategic takeaway is therefore straightforward. Turkey–Israel maritime tensions cannot be “managed” as a narrow naval problem because they are embedded in a multi-domain rivalry. Stability will depend less on rhetorical resets and more on practical mechanisms: deconfliction channels, predictable rules for maritime activity, and credible protection of critical infrastructure—paired with political choices about whether the region’s future connectivity will be inclusive, bypassing, or openly contested.
