Article 346 TFEU and the New Politics of European Defence Consolidation
How EU merger control, national FDI regimes and security derogations are reshaping cross-border defence M&A
European defence consolidation is entering a more legally complex phase. The central issue is not whether Article 346 TFEU gives Member States a free-standing merger-control power. It does not. Article 346 remains a narrowly construed Treaty derogation for essential security interests linked to arms, munitions and war material. The operational problem lies in its interaction with Article 21(4) EUMR, national FDI screening regimes and special powers such as Italy’s Golden Power, Germany’s AWG/AWV framework and France’s IEF regime. As the European Commission seeks to preserve the one-stop-shop logic of EU merger control and encourage greater defence-industrial scale, Member States continue to protect sensitive assets, classified capabilities, supply chains, ownership structures and national industrial positions. This creates a permanent friction between European integration and national control.
The report is structured around that friction. It first reconstructs the legal architecture of Article 346 TFEU, Article 21(4) EUMR, the Defence Procurement Directive and the EU FDI framework. It then analyses the relevant CJEU case law, the Commission’s Article 21 decisional practice and the 2026 Draft Merger Guidelines, with particular attention to proportionality, non-discrimination and the limits of national security claims. The report then compares the Italian, German and French regimes as distinct models of security intervention, before examining selected defence and strategic transactions as case studies. The final sections translate the findings into operational implications for M&A advisers, law firms, defence primes, private capital, sovereign investors and institutional investors, and set out scenarios for the 2026–2030 defence consolidation cycle.