Greece and Turkey face tensions over Aegean airspace and maritime claims

Maritime Parks and Airspace Violations Spark New Frictions

Bilateral grievances have multiplied rapidly in recent months. Greece points to unauthorized Turkish military flights in its airspace, the unauthorized transfer of roughly 2,000 Turkish troops to the coastline south of Izmir, and the establishment of what it calls illegal Turkish marine national parks in contested areas of the Aegean Sea. On the other side, Turkish President Recep Tayyip Erdoğan demands that Greece halt the militarization of its Aegean islands, while Foreign Minister Hakan Fidan characterizes those deployments as a direct security threat to Turkey, as reported by ARD.

The ‘Achilles Shield’ and Athens’ Defense Buildup

Confronted with what it views as a persistent revisionist threat, the Greek government is rapidly expanding its military capabilities. In late August, Greece signed a multi-billion-dollar defense agreement with Israel dubbed the "Achilles Shield," which will deliver a comprehensive air defense system alongside heavy investments in domestic arms manufacturing.

Regional Instability and the 12-Mile Territorial Waters Standoff

John Psaropoulos, a Greek journalist and analyst cited by ARD, argues that Athens views its actions strictly through the lens of self-defense. However, he warns that concurrent global crises in Ukraine, the Persian Gulf, and the Red Sea create an atmosphere of lawlessness where military conflict feels normalized. Psaropoulos notes that Greece increasingly treats Turkey with the same threat perception that Western Europe now applies to Russia.

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At the heart of the legal standoff is Greece’s potential right to extend its territorial waters to 12 nautical miles around the Aegean islands, a measure permitted under the UN Convention on the Law of the Sea. Turkey countered this potential move as early as 1955, declaring it a casus belli—a cause for war—arguing that such an extension would choke Turkish shipping lanes by drastically reducing international waters. Ronald Mainardus of the Athens-based think tank ELIAMEP describes Turkey as a “revisionist power” intentionally multiplying contested grey zones where the sovereignty of isolated islets remains disputed.

Internal Politics and NATO Containment

Despite the sharp rhetoric, other analysts urge caution. Hüseyin Bağcı, a political scientist based in Ankara, tells ARD that a direct military clash between the two NATO allies remains unlikely, describing the standoff as a “family conflict” that must be managed within the Atlantic Alliance and the European Union. Bağcı notes that President Erdoğan has no genuine interest in war, suggesting that many current escalations carry heavy domestic political motivations ahead of upcoming Greek elections, where Prime Minister Kyriakos Mitsotakis faces pressure to project strength.

Frequently Asked Questions

Why are Greece and Turkey arguing over the Aegean Sea?

The dispute encompasses overlapping claims regarding airspace, territorial waters, militarization of islands, and unresolved sovereignty over small islets and rocks, rooted in decades of historical friction following the 1974 Cyprus invasion.

What is the ‘Achilles Shield’ defense agreement?

Signed in late August between Greece and Israel, the multi-billion-dollar accord provides Greece with a comprehensive anti-aircraft and missile defense system to bolster its deterrence capabilities.

Does Turkey view Greek island defenses as a threat?

Yes. Turkish leadership, including President Recep Tayyip Erdoğan and Foreign Minister Hakan Fidan, frequently demands that Greece halt the militarization of its islands, calling the buildup a security threat to Turkey.