Achilles Shield

Achilles shield is a large-scale air defense initiative launched by Greece in April 2025. The plan that was revealed by Prime Minister Kyriakos Mitsotakis aims to be a national defense force system facing Greece's aerial and maritime threats up to 2036–2037.The initial cost is estimated at €2.8 billion rising up to €25 billion when including the military modernization program.

Background

In response to rising regional threats and tensions, new security challenges in the Eastern Mediterranean and military modernization, Greece developed an ongoing defensive plan. The long term project marks a change from the country's defensive approach to a modern one, aiming to ensure its national sovereignty, securing air and maritime spaces, while upgrading its cooperation with NATO by diverting forces to deterrence and alliance missions.

Name origin

The name for the system derives form the Greek mythology and the stories of Achilles and his shield, which are described by Homer's in his Iliad as providing protection from all conceivable dangers.

Scope & capabilities

Achilles Shield is a five layer defense system built to protect Greece from missiles, aircraft, drones, ships, and submarines. According to Defense Minister Nikos Dendias the system is meant to perform as an “anti-missile, anti-aircraft, anti-drone, anti-ship, and anti-submarine.”. Achilles Shield manages to integrated several capabilities into one system allowing Greece’s naval and air forces to move beyond territorial defense and assume broader strategic and deterrence roles within both national and NATO frameworks.
The system’s layered structure includes:

Anti-missile/ballistic missile defense
Anti-UAV defense
Anti-aircraft defense
Anti-ship defense
Anti-submarine defense

Technological features

Achilles Shield brings together new and existing air defense systems and links them through a shared network so radar and sensor data can be used more effectively. An AI-powered control system allows fast detection and response to threats. For undersea dangers, it uses advanced underwater monitoring technology to protect Greece’s waters. At least 25% of the system will be built by Greek companies, helping local industry grow and reducing dependence on foreign suppliers.

Timeline

The system is planned to be fully operational by 2027. It reflects Greece’s shift toward a modern defense strategy, using advanced technology and integration to face new threats and strengthen its role in NATO and the Eastern Mediterranean.

International collaboration and domestic industry

Greece is exploring partnerships with Israel for advanced systems like the Barak MX or a new version of the Iron Dome, since Israel is a leading provider of anti-missile technology. At the same time, Greece wants to strengthen its own defense industry by ensuring that up to 25% of the project is built with Greek components. Greek made systems are already in use, such as the Centauros anti-drone system, which can spot drones at 150 km and disable them at 25 km.