The European Union (EU) is facing significant challenges in its defense mechanisms as the United States indicates a reduction in troop levels abroad. Recent summits in Armenia, where the country is pivoting towards the West post-Azerbaijan's takeover of Nagorno-Karabakh, underscore the EU's need for a cohesive security strategy. Historically reliant on US military protection, the EU's defense structure is complicated by its dual political models of supranationalism and intergovernmentalism. This duality creates a tug-of-war that often paralyzes collective action, as seen in the Common Security and Defence Policy (CSDP), which requires unanimous consent from member states. Consequently, even if a majority agrees on military action, a single dissenting nation can veto it, leading to inaction. Additionally, fragmented military procurement practices hinder interoperability among EU armies, resulting in a diverse array of weapon systems that complicate joint operations. As the geopolitical landscape shifts, the EU must confront these structural contradictions to enhance its defense capabilities and reduce dependence on external powers.