ELDYSA

ELDYSA is a Greece military mission that has operated a Patriot PAC-3 air-defence battery in Saudi Arabia since September 2021, deployed under a bilateral defence cooperation agreement. Greece contributed the battery as part of broader NATO ally support for Gulf security, marking one of Athens’ most operationally significant overseas deployments. The unit is stationed at Yanbu, the Red Sea port city that serves as Saudi Arabia’s primary western crude export terminal.

In early 2026, ELDYSA recorded its first-ever combat engagement: the battery intercepted two Iranian Ballistic Missiles targeting Yanbu. A drone accompanying the attack evaded the system and struck the SAMREF refinery, a Saudi Aramco–ExxonMobil joint venture. The engagement marked a critical escalation, occurring after Iran’s closure of the Strait of Hormuz had made Yanbu the sole functioning crude export route for Gulf Arab states.

ELDYSA’s combat record raises pointed questions about European entanglement in the Gulf war. Athens is now on the frontline of a conflict its government did not formally join, operating a NATO-standard system in direct exchange with Iranian missiles. The partial failure against the drone component, with a consequent refinery strike, also exposes the limits of point-defence batteries when adversaries coordinate ballistic and unmanned threats simultaneously.