French nuclear deterrence has moved to the centre of Europe’s security debate after President Emmanuel Macron said France will increase its nuclear arsenal and open a deeper strategic dialogue with allied European countries, including Denmark and Sweden. Norway, by contrast, signalled it wants to assess the proposal more carefully and keep nuclear policy anchored inside NATO frameworks.
Macron’s new doctrine: more warheads and ‘forward deterrence’
Speaking on 2 March 2026 from France’s ballistic-missile submarine base at Île Longue in Brittany, Macron announced that France will increase the number of nuclear warheads for the first time since the early 1990s. He also described a broader role for France’s nuclear forces in Europe, including what French officials have framed as “forward deterrence”: the possibility of temporary deployments of nuclear-capable French aircraft to allied countries, paired with more joint planning and exercises.
Macron insisted that the political and operational decision to use French nuclear weapons would remain exclusively with the French president. The offer is designed to expand cooperation without creating shared command-and-control arrangements.
Why Denmark and Sweden are on the list
Denmark has publicly welcomed the shift, presenting it as a reinforcement of Europe’s deterrence posture at a moment of heightened insecurity. Danish Prime Minister (statsminister) Mette Frederiksen has argued that Europe needs a stronger ability to deter Russia, while stressing that any French role should complement NATO’s deterrence rather than replace it.
Copenhagen has also tried to draw a clear line on what is not on the table. Denmark’s Defence Minister (forsvarsminister) Troels Lund Poulsen has said the cooperation does not mean French nuclear weapons will be stationed on Danish territory, underlining that the dialogue is still at an early, political stage.
Sweden, now a NATO ally, has signalled interest in joining discussions on how French deterrence could fit into a wider European security architecture. The Swedish government has framed the conversation as part of a broader reassessment of European defence amid uncertainty about long-term transatlantic dynamics.
Norway’s hesitation: dialogue, but in ‘orderly’ NATO-linked formats
Norway was not among the Nordic countries explicitly highlighted as early partners in Macron’s public announcement. Norwegian Foreign Minister (utenriksminister) Espen Barth Eide has indicated that Oslo does not exclude a dialogue with France, but wants to evaluate the implications more thoroughly and avoid ad-hoc announcements. Norway’s message has been that nuclear deterrence should be discussed primarily inside NATO’s established structures, while France’s proposal sits alongside NATO rather than fully within it.
For Norway—whose security policy has traditionally balanced deterrence with reassurance in the High North—public messaging on nuclear issues carries an additional sensitivity. Any move perceived as lowering the threshold for nuclear signalling near Russia could complicate Norway’s long-standing approach in the Arctic and North Atlantic.
How this differs from NATO’s nuclear deterrence
Most European allies rely on USA nuclear forces as the core of NATO’s deterrence, with a limited set of countries participating in nuclear sharing arrangements linked to American weapons. France, however, has kept its nuclear forces outside NATO’s Nuclear Planning Group and maintains a national doctrine built around strategic autonomy and the ability to inflict “unacceptable damage” on an adversary.
Macron’s proposal does not formally replicate NATO nuclear sharing. Instead, it offers a looser structure: strategic consultations, participation in exercises, and potentially hosting nuclear-capable French aircraft for limited periods. The political question for many European governments is how such steps would interact with NATO’s unity, decision-making, and crisis management.
