Some of the Mediterranean's most popular holiday destinations sit inside a triangle of growing strategic rivalry. A recent column by Murat Yeşiltaş in Daily Sabah argues that the tensions between Türkiye, Israel and Greece are no longer separate, cyclical political spats — they are fusing into what the author calls a "Thucydides Triangle": a structural power competition stretching from the Aegean to the Levant.

Why should a traveller care? Because these three countries anchor some of Europe and the Middle East's biggest tourism economies — Antalya, Athens, the Greek islands, Tel Aviv — and the security mood in a region inevitably colours everything from flight routes and cruise itineraries to travel advisories and insurance premiums.

The column's core argument is that the old framing no longer holds. Türkiye's dispute with Israel was long read through the Palestinian question, and its friction with Greece through periodic flashpoints in the Aegean, Cyprus and maritime boundaries. Meanwhile, Israel and Greece's growing ties were seen as a standalone partnership. In reality, all three relationships now feed each other. Post-2010 — starting with the Mavi Marmara incident — Israel and Greece drifted together, helped along by energy discoveries and defence cooperation. Türkiye, in turn, grew more assertive: a bigger navy, expanded energy exploration, a 2019 maritime deal with Libya and a fast-growing defence industry.

There was a genuine thaw worth noting. Between 2021 and 2023, Türkiye and Israel restored ambassadorial-level relations, Israeli President Isaac Herzog visited Ankara in 2022, and Ankara and Athens struck a calmer tone ahead of 2023. The column treats this as proof that diplomacy can manage structural competition — the underlying rivalries never disappeared, but leaders kept them in check.

Since 2023, though, the Gaza war has ruptured Türkiye-Israel relations again, and the competition has gone geographic. Syria's future order matters to all three capitals: Ankara sees it as a national security issue, while Israel ties it to border security and freedom of military movement. Israel-Greece defence cooperation deepens, Türkiye responds by strengthening its own deterrence, and each side reads the other's moves as evidence of hostile intent. The author is careful to say conflict is not inevitable — but perceptions now matter as much as capabilities.

For holidaymakers, the practical read is this: mainstream tourist zones in Türkiye and Greece continue to operate normally, and daily life for visitors is far removed from these strategic calculations. But the Eastern Mediterranean is a region where geopolitics can move quickly. Anyone planning multi-country trips — say, island-hopping between Greek and Turkish coasts, or combining Israel with regional neighbours — should keep an eye on official travel advisories, check flight and ferry connections remain unaffected, and consider flexible booking options. Cruise passengers should note that Eastern Med itineraries have historically dropped or added ports when regional tensions spike. Israel-bound travel warrants the closest attention given the current security situation.

The bigger picture from the column is that the Aegean-to-Levant corridor is becoming one of the world's more tightly interlinked strategic arenas — worth understanding before you book into it.

Daily Sabah Travel