Defence and ESG in the EU: From Exclusion to Strategic Integration

The intersection between sustainable finance and defence has long been marked by tension. Under prevailing ESG (environmental, social, governance) frameworks, defence-related investments have often been excluded from portfolios due to ethical and reputational concerns. However, Europe’s evolving security landscape and geopolitical pressures have prompted a shift in regulatory and policy thinking. Today, the EU is beginning to reconsider the role of defence as not only compatible with sustainability objectives, but in some cases essential to achieving them. Objective: This report examines how environmental, social, and governance (ESG) frameworks under European Union regulation are evolving in their treatment of the defence sector. It maps the regulatory, institutional, financial, and reputational mechanisms that shape the ESG compatibility of defence-related investments, companies, and funding instruments in Europe. The analysis is grounded in official EU and national sources, with supplementary insights from leading institutional research bodies. Backdrop: Historically, defence industries have often been excluded from ESG-oriented funds and finance on ethical or reputational grounds. Banks, pension funds and insurers frequently maintained exclusion lists for arms manufacturers, viewing them as incompatible with “sustainable” or “socially responsible” investment criteria.