Turkey's interconnector standoff: war risks loom in the Eastern Mediterranean
"The acquisition of a 66 percent majority stake in the €3.9 billion Great Sea Interconnector by French firm Meridiam has injected vital financial momentum into the project, though it sets the stage for renewed geopolitical friction as upcoming subsea surveys challenge Turkey's attempts to enforce a naval veto in the Eastern Mediterranean."
EU Directive 2019/790 Article 15 Attribution • Verified Energy Document
A recent agreement, dated August 5, 2026, saw French firm Meridiam acquire a majority stake in the Great Sea Interconnector, an ambitious electricity link between Greece and Cyprus. This acquisition, alongside Greece’s Independent Power Transmission Operator as the strategic and technical lead, revives a crucial project that Turkey has actively tried to obstruct through naval maneuvers. A concurrent agreement with Nexans will allow for the resumption of vital bathymetric surveys, meaning future navigational warnings will not only pertain to the cable laying but also test the resolve of Greek deterrence.
The European Union has designated the Great Sea Interconnector, a 750-mile, $2.2 billion project, as a Project of Common Interest, backed by $761 million in European Commission funding. Its primary objective, as articulated by Greek Prime Minister Kyriakos Mitsotakis, is to alleviate Cyprus's energy isolation as the sole EU member state without an electricity grid connection. A subsequent phase plans to extend the interconnector to Israel.
This project has faced significant challenges. In July 2024, an Italian survey vessel, the Ievoli Relume, was surveying south of Kasos and Karpathos when it was confronted by five Turkish warships. Turkey asserted that the area fell within its continental shelf and demanded prior permission for such activities. Although the immediate crisis subsided, Turkish revisionist policies and military actions in the Eastern Mediterranean led to sustained delays, preventing the work from regaining its original momentum.
Following Meridiam's recent involvement, Ankara promptly reiterated its demand for prior coordination, with Turkish media portraying the country's consent as a "legal threshold" for the project's progression. This effectively positions President Recep Tayyip Erdoğan as seeking veto power over a European Union initiative and Greece's sovereign rights.
Adding to the regional instability, a classified document leaked on August 10, 2026, bearing Defense Minister Yaşar Güler’s signature, exposed coordinated efforts among Turkish state agencies. These efforts focus on potential scenarios of "crisis, tension, and war," specifically targeting Greece, the Aegean Sea, the Eastern Mediterranean, and military collaborations between Athens and Jerusalem.
Former Erdoğan adviser İbrahim Karagül echoed these sentiments in an article, issuing stark threats that Greek islands could "change hands within a week," new maps would be drawn for the Aegean and Western Thrace, and "what was left unfinished in 1974" in Cyprus would be concluded. He further warned that any attack on Turkish forces in occupied northern Cyprus would result in targeting Israelis on the island and its environs.
Turkish Foreign Minister Hakan Fidan has also characterized the burgeoning cooperation between Greece, Cyprus, and Israel as an attempt at Turkey's "encirclement," confirming that Ankara has issued warnings to the involved parties. This trilateral alliance is a significant concern for Turkey as it challenges the core of its neo-Ottoman strategy: to establish itself as an indispensable intermediary in the Eastern Mediterranean, thereby gaining influence over its neighbors' decisions.
President Erdoğan’s pronouncements from Ahlat, made on the anniversary of the 1071 Battle of Manzikert, further underscore this assertiveness. Recalling the Seljuk Turkish victory over the Byzantine Empire, Erdoğan unequivocally stated that Turkey "will not allow" any plans that diverge from its regional agenda.
In a related strategic move, the Mecca Joint Defense Agreement, involving Saudi Arabia and Pakistan, has been equated by Fidan to NATO’s Article 5, signifying that an an attack on one member is considered an attack on all. This initiative highlights Ankara's ambition to forge a parallel regional security framework, leveraging Saudi financial resources, Pakistani military strength, and its own defense industry.
The impending resumption of maritime surveys in the coming months carries the risk of renewed naval harassment against European survey vessels. This could escalate into competing navigational warnings, significant naval deployments, or even a controlled armed incident, where the initial hours could prove decisive. The deployment of Greek F-16s to Paphos and a frigate in the vicinity signals the seriousness of this threat.
The successful completion of the Great Sea Interconnector is paramount. It necessitates robust political support from Europe, France, Israel, and Cyprus, coupled with a credible Greek military deterrence and a clear willingness to employ force. Should Turkey succeed in repeating its past obstructive tactics, as seen in the Kasos incident, and Greece retreats, Ankara would not only halt the interconnector but also effectively legitimize the controversial Turkey-Libya memorandum, thereby establishing a precedent that no project in the Eastern Mediterranean can advance without its explicit consent.