A recent move by Turkey to designate two marine parks in the Aegean Sea and eastern Mediterranean has reignited tensions with Greece over disputed maritime boundaries. The protected areas announced by Turkey include waters near the Greek islands of Lemnos, Samothrace, Rhodes, and Kastellorizo.
The announcement challenges Greece’s sovereignty claims and follows a brief period of improved relations between the two countries that began after Greece provided aid following a devastating earthquake in Turkey in early 2023. Despite the goodwill gestures, long-standing disagreements over maritime borders remain unresolved.
According to information released by Greece’s Foreign Ministry, Turkey’s declaration of marine parks outside its territorial waters is considered illegal and lacks legal validity. Greek officials view the move as part of Turkey’s broader “Mavi Vatan” or “Blue Homeland” doctrine, which asserts extensive maritime claims at the expense of Greek and Cypriot exclusive economic zones.
Maritime Disputes and Environmental Protection Concerns
The competing marine park declarations appear to serve more as geopolitical tools than purely environmental protections. Turkey did not consult Greece before establishing its protected areas, further aggravating the situation. Greece, in turn, has announced its own marine parks within its territorial waters in the Ionian Islands and southern Cyclades for 2025, which Turkey warned against as unilateral actions that escalate regional tensions.
Defense Investments and Strategic Alliances
Facing a military imbalance with Turkey, Greece has significantly increased its defense spending in recent years, acquiring fighter jets, frigates, submarines, and advanced air defense systems. Greece ranks 19th globally in arms imports between 2021 and 2025, according to the Stockholm International Peace Research Institute.
Greece is also enhancing strategic cooperation with Israel, planning an air defense system over the Aegean Sea modeled after Israel’s Iron Dome. Named “Achilles Shield,” the system is expected to be operational by 2029 to counter a range of potential threats, including those stemming from regional disputes.
Outlook on Greece-Turkey Relations
While Greek leadership has emphasized maintaining good relations with neighboring countries and abiding by international law in defining sovereignty, the underlying maritime conflicts cast a shadow over future diplomatic efforts. With national elections approaching in Greece, political pressure may increase for a firmer stance in response to Turkey’s maritime claims.
