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 · 19 Oct 2026

Cyprus diplomacy turned publicly contentious after a cordial bicommunal gesture, while Greece and Türkiye traded dueling NAVTEX notices over a naval exercise area that overlaps the planned route of the Greece-Cyprus-Israel power cable. No new airspace or electronic-interference incidents were confirmed in the past 24 hours.

• Military posture: 5/10 · Turkish Antalya station issued a counter-NAVTEX (16 Oct) disputing Greek authority over the Eunomia 2026 live-fire exercise area, due to run today; no fresh violations report found for 17-18 Oct.
• Diplomatic / political: 4/10 · President Christodoulides publicly accused Turkish Cypriot leader Erhürman of setting rotating-presidency preconditions on resuming Cyprus talks (18 Oct), a day after the two jointly attended a bicommunal 'peace' festival in Pyla.
• Economic / informational: 5/10 · Turkey's counter-NAVTEX disputes Greek/Cypriot authority over waters overlapping the planned Great Sea Interconnector survey route, as Athens and Nicosia prepare to resume cable surveys without Ankara's consent.
• EW / SIGINT: 3/10 · No GPS/GNSS jamming, spoofing or radar interference reported in the Aegean or around Cyprus in the past 24 hours.

Sources

• Greek City Times: Turkey Issues Navtex for Live-Fire Exercise South of Kastellorizo
• Greek Reporter: Turkey Issues NAVTEX Ahead of Greece-Cyprus Power Link Surveys
• To Vima: Turkey Issues Counter-Navtex for Exercise South of Kastellorizo
• Cyprus Mail: Christodoulides accuses Erhurman of 'setting preconditions' on resumption of talks
• Cyprus Mail: Christodoulides, Erhurman send 'message of peace' at Pyla festival
• Cyprus Mail: Erhurman: Guterres said Barcelona camp cancellation was 'discouraging'
• Greek City Times: Greece Watches Guilfoyle Fallout as Turkey Cable Dispute Looms
• Calibration gap: the latest entry on

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