As war returns to Europe’s borders and tensions flare up in the Middle East, political voices seek to blame ESG frameworks for obstructing European defence investment. In reality, European sustainable finance regulations, including the Sustainable Finance Disclosure Regulation (SFDR), do not prohibit defence investments outright. Instead, they demand clarity, transparency, and alignment with international norms.

There are very few regulatory red lines that explicitly restrict defence investments. Cluster munitions and landmines are among those, remaining banned under international law, while nuclear weapons sit in a regulatory grey zone.

Italy’s 2024 update to Law 220/2021 marks the first legal move in Europe to extend weapons exclusions to passive funds, closing the gap that left Article 6 and index-tracking funds outside regulatory scrutiny. Many asset managers and index providers are not yet fully addressing these changes.

Unlike cluster munitions and landmines, nuclear weapons are not explicitly prohibited under Europe’s sustainable finance regulations. They remain legally permissible, but subject to heightened reputational scrutiny.

The real barrier to defence industry finance is not ESG ideology, but the need for transparency, disclosure, and trust. Using ESG filters is not about banning defence investment. But as the defence sector grapples with these pressures, it must ask itself whether it is truly prepared for the ESG transparency demands – and what it might reveal.  

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