The 10th Israel–Greece–Cyprus Summit: Institutionalizing the Eastern Mediterranean Alliance and Reshaping Regional Balances

The Eastern Mediterranean has witnessed accelerating transformations in regional power dynamics over the past decade, driven by the intersection of energy competition, maritime security concerns, and broader geopolitical rivalries among regional actors. Within this evolving strategic environment, the tenth trilateral summit between Israel, Greece, and Cyprus signals a shift from ad hoc political coordination toward a more institutionalized framework of cooperation. The significance of this summit lies not only in the economic and technical cooperation initiatives it highlighted, but also in its broader strategic implications for the emerging security architecture of the Eastern Mediterranean and the political and deterrence messages it sends—particularly toward Turkey.

The summit was held in Jerusalem on December 22, 2025, bringing together Israeli Prime Minister Benjamin Netanyahu, Greek Prime Minister Kyriakos Mitsotakis, and Cypriot President Nikos Christodoulides. The joint statement emphasized the intention to institutionalize the trilateral framework through an annual summit mechanism while expanding cooperation in security and defense, particularly maritime security and the protection of critical infrastructure in the Eastern Mediterranean. The summit also focused on energy and regional connectivity projects, most notably advancing the Great Sea Interconnector electricity link project, alongside broader regional connectivity initiatives connected to the India–Middle East–Europe economic corridor. In addition, the statement addressed several regional issues, including developments in Gaza, the importance of Lebanese sovereignty and the state’s monopoly over arms, as well as broader Eastern Mediterranean dynamics and the Cyprus question.

The summit’s outcomes suggest that the trilateral partnership is gradually evolving into a comprehensive strategic platform combining elements of both military security and economic security. On one level, military coordination among the three countries has intensified through joint exercises, intelligence sharing, and cooperation aimed at protecting maritime infrastructure. On another level, the partners are seeking to establish a network of energy and electricity interconnection projects and cross-border infrastructure initiatives designed to deepen economic integration and elevate the geopolitical significance of their cooperation.

In this context, the protection of critical infrastructure has emerged as a central driver of expanded security cooperation. Infrastructure linked to gas pipelines, submarine cables, and electricity interconnection networks has increasingly become a focal point of strategic competition in the Eastern Mediterranean. This has prompted the three countries to develop new security approaches designed to safeguard these assets. One notable example is the planned establishment of a Maritime Cybersecurity Center of Excellence (MCCE) in Cyprus, expected to open in 2026. This initiative reflects a growing awareness that contemporary threats extend beyond traditional military confrontation to include cyber operations and gray-zone tactics targeting submarine cables and maritime infrastructure.

Alongside these developments, media reports have also circulated regarding a Greek proposal to establish a joint rapid-response force aimed at protecting maritime infrastructure in the Eastern Mediterranean. According to these reports, the force could consist of approximately 2,500 personnel drawn from the three countries and would be capable of rapid deployment across various locations in the region, including islands in the Aegean Sea, Cyprus, and bases in Israel. Although no official announcement has yet confirmed the creation of such a force, the mere discussion of this proposal indicates a growing inclination toward establishing a collective deterrence mechanism capable of responding to maritime security challenges.

These developments must be understood within the broader context of intensifying geopolitical competition in the Eastern Mediterranean, particularly in relation to Turkey. Maritime tensions between Turkey and both Greece and Cyprus have experienced periods of relative containment in recent years. However, the structural roots of the dispute—particularly those linked to maritime boundary delimitation and offshore energy exploration rights—remain unresolved. At the same time, the deterioration of Turkish–Israeli relations following a brief phase of attempted rapprochement has effectively returned regional alignments to their earlier configuration, in which Israel, Greece, and Cyprus view enhanced security cooperation as a means of balancing Turkish influence in the region.

The trilateral alignment also reflects a broader international dimension, as the partnership has received clear political support from the United States. Washington has increasingly encouraged the formation of regional cooperation frameworks among its partners in the Eastern Mediterranean as part of a wider strategy aimed at strengthening security networks capable of safeguarding maritime trade routes and supporting Europe’s energy security. From this perspective, the Israel–Greece–Cyprus partnership represents one component of the broader regional security architecture that the United States seeks to reinforce.

Despite the growing depth of this alliance, however, the regional environment is unlikely to shift toward direct military confrontation in the near term. The strategic competition in the Eastern Mediterranean continues to operate largely within a deterrence balance framework rather than a trajectory toward open conflict. In the foreseeable future, rivalry between Turkey on one side and Greece and Cyprus on the other is likely to persist through the strengthening of military capabilities and the expansion of regional partnerships, while diplomatic negotiation channels remain open. Limited maritime incidents may still occur, particularly if security initiatives such as the proposed rapid-response force or contested energy projects proceed in ways perceived by Ankara as threatening its strategic interests.

Ultimately, the tenth trilateral summit between Israel, Greece, and Cyprus reflects a new phase in the evolution of their partnership, characterized by institutionalization and an expanded scope that integrates military security, energy cooperation, and strategic infrastructure development. Yet the long-term success of this framework will depend on the ability of the three countries to secure financing, ensure implementation, and provide effective protection for their energy and connectivity projects within a highly sensitive regional environment. Equally important will be their capacity to manage the strategic balance with Turkey without pushing the Eastern Mediterranean toward a cycle of open escalation that could undermine the region’s fragile stability.