Turkey moves to codify ‘Blue Homeland’ claim, heightening Mediterranean tensions

Turkey is preparing a draft law to embed its "Blue Homeland" (Mavi Vatan) doctrine in national legislation. The bill, expected in parliament in June, would legally affirm Turkey’s claim to roughly 462,000 km² of maritime space covering the Aegean Sea, the Eastern Mediterranean and the Black Sea. The doctrine, formulated by senior naval officers in the 2000s, seeks to define Turkey’s exclusive economic zone based on equidistance and the continental shelf rather than the United Nations Convention on the Law of the Sea, a stance that conflicts with the claims of Greece and Cyprus.

The legislation aims to lock in Turkey’s maritime ambitions, support domestic nationalist sentiment ahead of possible early elections, and provide an internal legal basis for future naval or energy operations. Analysts warn that turning the doctrine into law could reduce diplomatic flexibility and raise the risk of a new escalation in the region, where offshore gas reserves are already disputed. The move also reinforces Turkey’s 2019 maritime agreement with Libya, further complicating negotiations with Athens, Nicosia and other regional actors.