European Air Shield (EAS): Rebuilding Europe’s Multilayered Architecture of Deterrence

The European Air Shield (EAS) was conceived as one of the central pillars of the Defence Readiness Roadmap 2030, emerging from the political and strategic momentum created by the White Paper for European Defence – Readiness 2030. Its creation reflects a profound redefinition of the European Union’s role in collective deterrence, shaped by the lessons of the war in Ukraine and the rapid transformation of the aerial threat landscape. The conflict demonstrated that airspace is now a domain of permanent vulnerability: drones, cruise missiles, and hypersonic weapons can strike deep into national territories with little warning, targeting infrastructure and civilian populations as part of an integrated strategy of coercion. Europe’s historical reliance on external systems for high-end air and missile defence—particularly US-made platforms—has exposed structural dependencies and political risks. The EAS is therefore intended not only as a military initiative but as a strategic assertion of autonomy. It seeks to guarantee that deterrence in the air domain is sustained by European capabilities, produced within Europe’s own industrial ecosystem, and aligned with the long-term objective of achieving full defence readiness by 2030. In this sense, the EAS is both a technological and political response to a new phase of strategic competition in which control of the skies defines the credibility of power on the ground.