Aegean Tension IndexA daily escalation/de-escalation index for Cyprus, Greece and Türkiye across the Aegean and Eastern Mediterranean, from open-source indicators & warnings. A heuristic, not a forecast.

What changed · 22 Oct 2026

Greece and the EU rejected the Libyan eastern parliament's 20 October ratification of the 2019 Turkey-Libya maritime memorandum, which Erdoğan welcomed, reviving the Eastern Mediterranean EEZ and hydrocarbons dispute. In Cyprus, Turkish Cypriot leader Erhurman confirmed he rejected President Christodoulides' Varosha/Famagusta proposal, a setback for resuming substantive talks. No new military incidents specific to the last 24 hours were found in open sources.

• Military posture: 4/10 · No Hellenic MoD or Turkish MoD violation bulletin specific to 20-21 Oct was found in open-source search; scored at the recent routine baseline.
• Diplomatic / political: 6/10 · Libya's eastern parliament ratified the 2019 Turkey-Libya maritime memorandum on 20 Oct; Greece's foreign ministry called it void, the EU's von der Leyen and Costa called it null and said it infringes third states' sovereign rights, and Erdoğan publicly welcomed the vote on 21 Oct.
• Economic / informational: 6/10 · The ratified Turkey-Libya memorandum reasserts overlapping EEZ/continental-shelf claims affecting Greek hydrocarbon exploration near Crete, extending the dispute Türkiye already raised over Chevron and HELLENiQ ENERGY licences.
• EW / SIGINT: 3/10 · No GNSS jamming, spoofing or emitter interference linked to Greece, Cyprus or Türkiye reported in the past 24 hours.

Sources

• Cyprus Mail: Cyprus declares Turkey-Libya maritime agreement illegal
• Cyprus Mail: Erhurman confirms rejection of Christodoulides' Varosha proposal
• Turkish Minute: EU, Greece reject Turkey-Libya maritime pact as Ankara defends deal
• Athens News: Türkiye achieved recognition of the maritime treaty with Libya; Athens declared a violation of its rights

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