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 · 27 Sep 2026

Military tension eased slightly as Türkiye's Denizkurdu-I/2026 naval exercise concluded with no new incidents, while diplomatic friction over Cyprus intensified: President Christodoulides and Turkish Cypriot leader Erhürman traded public, conflicting accounts of a failed trilateral meeting with UN Secretary-General Guterres, and the Republic of Cyprus asked UN member-state missions to avoid contact with Turkish Cypriot officials.

• Military posture: 4/10 · Denizkurdu-I/2026 concluded with no new naval or air incidents reported in the past 24 hours; a Turkish NOTAM for the Aegean (25 Sept-27 Oct) remains in force as a background factor.
• Diplomatic / political: 5/10 · Christodoulides said the Turkish Cypriot side rejected a UN-brokered trilateral meeting; Erhürman denied this, calling it a 'perception operation', while Cyprus's letter asking UN missions to shun Turkish Cypriot officials was defied by a Turkish Cypriot envoy meeting Pakistani and French diplomats.
• Economic / informational: 4/10 · No new statements reported in the past 24 hours; the Great Sea Interconnector coordination dispute (Ankara's 25 Sept demand for prior consent on cable-laying) remains unresolved without fresh escalation.
• EW / SIGINT: 3/10 · No GNSS jamming, spoofing, radar or communications-interference incidents linked to Greece, Cyprus or Türkiye were reported in this window.

Sources

• Cyprus Mail: Christodoulides, Erhurman clash over failed New York meeting
• Cyprus Mail: Greek Cypriots ask New York diplomats to 'refrain' from meeting Turkish Cypriots
• Ozgur Gazete Kibris: Erhurman says Turkish Cypriots continue backing the Secretary-General's efforts (Turkish)
• GreekReporter: Christodoulides Tells Diaspora Turkish Cypriot Side Rejected UN Push for Cyprus Talks
• Greek City Times: Cyprus Talks Remain Deadlocked as Turkey Holds Firm on Two State Position
• C4Defence: Denizkurdu Exercise Conducted Simultaneously Across Four Seas
• Turkish Minute: Turkey says Greece-Cyprus-Israel power cable must be coordinated with Ankara

Open the interactive view → · Sign in to download the full data (CSV/JSON, free account)