Brussels, Belgium – The European Union is moving to bolster its defense capabilities, focusing on addressing security threats that fall below the threshold for triggering NATO’s Article 5 collective defense clause. This shift comes amid growing concerns about potential Russian aggression and increasing uncertainty regarding the long-term commitment of the United States to European security.
According to the highest-ranking military official in the EU, work is underway to operationalize the EU’s mutual defense clause, outlined in Article 42.7 of the treaties. The focus will be on scenarios “below the threshold” of NATO’s Article 5, which is invoked in response to direct attacks on member states. Euronews reports that this move reflects a desire for greater European independence in defense matters.
General Seán Clancy, chair of the EU’s Military Committee, stated that his team is prepared to help redefine what European mutual defense entails. The development underscores a growing recognition within the EU that it must be able to respond effectively to a wider range of threats, even those that don’t meet the criteria for invoking NATO’s most robust defense mechanisms.
European Commission President Ursula von der Leyen, speaking at the Munich Security Conference on February 15, 2026, called for the EU to become more independent in defense. “The time has come for the Union to bring its mutual defense clause to life,” she said, adding that the commitment enshrined in the clause “only carries weight if it is based on trust and capability.” France Info reported on her remarks.
This push for greater EU defense capabilities follows Russia’s full-scale invasion of Ukraine in 2022 and concerns about potential further attacks on European countries before the end of the decade. The situation has too been complicated by perceived unpredictability from the United States, particularly under the Trump administration, which has signaled a potential shift in focus towards Asia. The French Ministry of the Armed Forces notes that the US is increasingly prioritizing its own security interests.
The EU already has a framework for deploying military and civilian resources to address international crises through the Common Security and Defence Policy (CSDP), but it does not constitute a European army. As noted by the Ministry of the Armed Forces, the EU launched Operation Aspides in February 2024.
The EU’s mutual defense clause is formulated more firmly than NATO’s Article 5, but has historically been considered weaker due to reliance on US deterrence. The current efforts aim to change that dynamic, ensuring the EU can act decisively and independently when necessary. Vie publique provides further details on the functioning of the EU’s mutual defense clause.
As of 2026, the military personnel numbers across the European Union vary significantly by country. CNews has published a breakdown of military personnel numbers in each EU member state.
