In this paper, Marek Gallo analyses the implications of the newly created post of Defence and Space Commissioner (DaSC) for the European security architecture. The appointment of Andrius Kubilius reflects a strategic shift aimed at bolstering the EU’s defence industry and achieving greater strategic autonomy in response to Russian aggression and global instability. However, this paper argues that while the DaSC role emphasises joint procurement and enhanced interoperability, the portfolio lacks the authority to drive substantial defence reforms. At the same time, Kubilius' success depends on securing resources, overcoming institutional hesitancy, and fostering collaboration with NATO. Additionally, the EU’s cost-effective space policy focuses on regulatory leadership and space programmes continuity, rather than militarisation. This paper constructively highlights the challenges Kubilius will face in aligning immediate security concerns with long-term strategic objectives, positioning the DaSC as a symbolic yet limited step in strengthening Europe’s defence posture.