Eastern Mediterranean Geopolitics: Powers, Energy and Diaspora

Eastern Mediterranean geopolitics is the contest over energy, maritime space and security among Greece, Cyprus, Türkiye, Israel, Egypt and their neighbors, with the United States, the EU, Russia and others pulling from outside. Three forces explain most of what you read in the news: offshore gas, overlapping sea claims, and new defense partnerships. This guide takes them in turn, then adds a layer most analyses skip: the role of Greek communities and institutions across the region.

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TL;DR

The region has no single definition. Analysts usually include Türkiye, Greece, Cyprus, Israel, the Palestinian territories, Jordan, Lebanon, Egypt and Syria, and some add Libya.
Gas discoveries turned a set of old disputes into a contest over pipelines, power cables and maritime boundaries.
Two blocs are hardening: a Greece, Cyprus, Israel and Egypt web of cooperation, and a Turkish response built on its “Blue Homeland” doctrine.
Outside powers matter, but the research describes a US policy that is reactive and an EU that is divided.
Diaspora networks, Orthodox institutions and postal voting give Hellenism a soft-power role that state-level analysis often misses.

How the region is defined
Why the region is contested
Energy, pipelines and maritime boundaries
Alliances and rivalries
The outside powers
Where the Greek diaspora fits
What to watch next
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FAQ
Sources

How the region is defined

Ask three research institutions where the Eastern Mediterranean begins and you get three slightly different maps. One academic Mediterranean policy institute says that regional analysis typically includes Turkey, Greece, Cyprus, Israel, Palestine, Jordan, Lebanon, Egypt and Syria. A strategic dossier from a London defense think tank surveys Cyprus, Egypt, Greece, Israel and the Occupied Palestinian Territories, Lebanon, Libya, Syria and Türkiye.

The differences are not pedantry. Including Libya, for example, brings in the Turkish-Libyan maritime arrangements that Greece and Egypt contest. Including Jordan brings in gas import dependence. When you read any analysis, check which map the author is using, because the conclusions change with the boundary.

The same institute adds a useful framing: the region is fragmented. It is less a unified project than a set of countries with diverging priorities, shaped by direct conflicts and by ties to extra-regional alliances. Outside actors often drive conflict-resolution processes. Keep that in mind: “the Eastern Mediterranean” is a place, not an actor.

Why the region is contested

Oxford’s St Antony’s College describes the area as a focal point for great power competition, driven by energy resources, maritime disputes, military positioning and regional instability. The United States, Russia, the European Union and China are all engaged.

A 2026 Middle East Institute paper puts the pressure points in a similar way: tensions are driven mainly by great-power competition and energy discoveries among littoral states from Cyprus to the Levant, with Russia’s military buildup and Iranian proxy activity concentrated in the eastern half of the sea.

The result is a region where almost every issue is linked to another. A gas field raises a boundary question. A boundary question raises a naval question. A naval question draws in an outside power with a base or an alliance.

Energy, pipelines and maritime boundaries

Gas as a catalyst

The strategic dossier mentioned above argues that commercial drivers have catalyzed maritime-border disputes, including around Cyprus. It also says solutions need domestic political will, attention from outside powers and investment from international energy companies. Connectivity projects, it adds, are creating geo-economic competition as states try not to be bypassed.

One of its sharper points is that regional gas matters more to the region’s own countries than to the markets they hope to supply. Several of them, in dire economic condition, have become dependent on discovered or anticipated reserves, and arguably overly enthusiastic about them.

The EU angle and its limits

A 2025 analysis from a Moroccan policy institute notes that EU efforts to cut reliance on Russian gas initially positioned the region as a key supplier, but escalating instability now puts those ambitions at risk. It singles out overlapping maritime claims and the Israel-Lebanon and Gaza conflicts as threats to existing agreements and future projects.

War disrupts the supply chain

A 2026 analysis from Columbia University’s Center on Global Energy Policy says the US-Israel war with Iran disrupted gas production, exports and development in the region, threatened infrastructure and raised investment uncertainty. It adds that Egypt and Jordan have become heavily dependent on gas imports from Israel. Energy interdependence, in other words, ties together countries that do not necessarily trust each other.

A 2025 industry report from a Greek energy institute makes the same point from the infrastructure side: countries are increasingly linked through pipelines, electricity cables, forums and export ambitions, yet tensions over maritime boundaries and exploration rights shape how far that cooperation goes.

The legal fault line

The legal question is UNCLOS. After a Greece, Cyprus and Egypt trilateral in September 2026, the three states restated that any agreement on delimiting maritime zones must comply with international law, including UNCLOS. The message was aimed at Ankara, which approaches the same waters through a different doctrine.

Alliances and rivalries

Axis	Main participants	What drives it
Greece, Cyprus, Israel (with Egypt in energy ties)	Athens, Nicosia, Jerusalem, Cairo	Gas export, maritime security, defense cooperation
Turkish maritime doctrine	Ankara	“Blue Homeland” claims across the Aegean, Eastern Mediterranean and Black Sea
Outside powers	US, EU, Russia, China	Energy, bases, connectivity, great-power rivalry

St Antony’s identifies the core rivalry as Greece-Turkey tension alongside expanding cooperation among Greece, Cyprus and Israel. It also notes that Israel has become a major energy player through its offshore fields and has built partnerships with Cyprus, Greece and Egypt to export gas to Europe.

From energy to security

Al Jazeera reported in January 2026 that the Israel-Greece-Cyprus trilateral has moved from energy cooperation toward security coordination, with the US included as a “like-minded partner” in a so-called 3+1 format. The same report relays the Turkish reading: under the Blue Homeland doctrine, one Turkish commentator described the trilateral as an attempt to exclude and encircle Türkiye.

The defense side has since grown more concrete. A 2026 analysis from a Cyprus-based think tank says Greece signed a roughly €3 billion “Achilles Shield” pact with Israel in August 2026, building a layered air, missile and drone defense. The same piece reports a Saudi Arabia, Pakistan and Türkiye “Makkah Joint Defence Agreement” that treats an armed attack on one as an attack on all. Whatever one makes of the framing, the direction is plain: defense ties are thickening on both sides.

The broader European defense-industrial picture matters here too. A guide to the European Defence Fund explained shows how EU money is meant to build joint capability, which is part of the context for how Greece and Cyprus anchor themselves in European security.

Egypt’s place

Egypt is often treated as a footnote, but it is a hinge. It sits in the Greece-Cyprus-Egypt trilateral, imports Israeli gas and shares a long maritime frontier with several disputed zones. The September 2026 summit, according to the Cyprus-based analysis cited above, tied regional connectivity, energy and maritime security together, with an emphasis on freedom of passage and energy projects linking the region to Europe.

The outside powers

The London dossier is blunt about Washington: the US remains the most powerful player, but its policy has become minimalist, opportunistic and reactive, promoting regional networks and connectivity. It calls the EU divided and structurally weak, and says Russia and China remain second-tier despite increased investment.

That last point deserves attention. Headlines often treat Russia and China as decisive in the Mediterranean. The dossier argues they are not, and that the real uncertainty comes from the absence of an inclusive security order and of institutions able to mediate conflict.

Where the Greek diaspora fits

Most geopolitical writing on the region stops at governments and navies. That leaves out one of the oldest networks in the basin: Greek communities and Orthodox institutions that have lived in these societies for generations.

Greece’s foreign ministry has described the Patriarchate of Alexandria as keeping the Greek Orthodox presence alive in Egypt, and the Greek communities of Alexandria and Cairo as bridges of communication and friendship that maintain Greek language and culture. In a 2026 interview, the president of the Cairo community argued that diaspora Hellenism must be organized so it can become soft power and “people to people” diplomacy grounded in cultural ties beyond strict state frameworks.

The political dimension is visible in Cyprus too. The Archbishop of Cyprus told the National Herald in January 2026 that Cyprus cannot do very much on its own and needs Greece and the whole diaspora to stand by it.

Participation is also becoming formal. Legislation passed with the required two-thirds majority allows Greeks abroad to vote by mail in national elections from March 2026, after postal voting was first allowed at the June 2024 European Parliament elections. For analysts, that turns a diffuse cultural community into a measurable political constituency.

What to watch next

Three uncertainties will shape the coming years.

Security without an alliance. The London dossier expects connectivity and energy and defense drivers to keep producing geo-economic competition and thicker defense ties without formal alliances.
Crisis contagion. A 2026 paper in the Athens Journal of Mediterranean Studies argues that military confrontation, energy insecurity, migration and climate shocks are increasingly interrelated across the basin, so management needs coordination at a hyper-regional or global level, with the EU proposed as one such power.
Gas ambitions against reality. War, boundary disputes and investor caution all test whether export plans become pipelines and cables.

Our perspective

Eastern Mediterranean geopolitics is usually told as a story of states, fleets and gas fields. We think that is half the picture. Greek and Orthodox communities from Alexandria to Nicosia are part of how the region works, and almost nobody monitors them systematically.

That is why we built Hellenism Watch as an independent, non-profit observatory, free of government and party influence. Every claim we publish is tied to credible sources, because a topic this charged needs documentation more than it needs opinion.

We also believe no single analyst can cover the Balkans and the Eastern Mediterranean. Our open fellowship invites scholars worldwide to contribute data and analysis from their own expertise, so that a national perspective on Greek identity and strategy rests on shared evidence.

Alexios

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FAQ

Which countries are part of the Eastern Mediterranean?

There is no single list. Policy analysts commonly include Türkiye, Greece, Cyprus, Israel, Palestine, Jordan, Lebanon, Egypt and Syria, and some add Libya. Check which definition an author uses before comparing conclusions.

Why is gas so central to the region’s politics?

Offshore discoveries created export ambitions and made maritime boundaries commercially valuable. Researchers say this catalyzed disputes, for instance around Cyprus, while also pushing states to build links such as pipelines and power cables.

What is the “Blue Homeland” doctrine?

It is a Turkish maritime doctrine calling for Ankara to safeguard its interests across the Aegean, the Eastern Mediterranean and the Black Sea. Greece and Cyprus dispute the claims associated with it, and they cite international law, including UNCLOS, in response.

Do outside powers decide what happens in the region?

They matter, but not equally. One major assessment calls the US the most powerful player yet reactive in its policy, the EU divided, and Russia and China second-tier. Regional states keep considerable agency of their own.

How does the Greek diaspora relate to all this?

Communities and Orthodox institutions act as cultural bridges and, increasingly, as a political constituency, helped by postal voting for Greeks abroad. Analysts describe this as a form of soft power that sits alongside state diplomacy.

Eastern Mediterranean Geopolitics: Powers, Energy and Diaspora