On 27 May, Norwegian Prime Minister Jonas Gahr Støre announced that Norway would join France’s nuclear umbrella. Under the arrangement, Oslo, alongside nine other European capitals, will take part in assessing how French nuclear weapons could contribute to Europe’s security and deterrence capabilities.
Støre explained that Norway is seeking the agreement partly because of Russia’s military rearmament and growing concerns over declining American support. At the same time, he stressed that the arrangement does not alter Norway’s longstanding position on nuclear weapons, stating that “there should be no nuclear weapons on Norwegian territory during peacetime”.
Alongside the nuclear umbrella, the agreement with Paris provides for closer cooperation in hybrid warfare, space operations, maritime security, cyber security, support for Ukraine, and defence industries. The deal has been named the Narvik Agreements.
Norway’s decision aligns with French President Emmanuel Macron’s initiative for “extended nuclear deterrence”, unveiled in March 2026.
Ten countries are currently participating in the French initiative: France, the United Kingdom, Germany, Poland, the Netherlands, Sweden, Denmark, Belgium, Greece, and Norway.
The initiative reflects a growing sense of urgency regarding European security and marks an evolution in France’s nuclear policy, which increasingly emphasises a European dimension. France has reportedly consulted both the United States and NATO regarding the proposal.
More broadly, the initiative signals that Europe is assuming greater responsibility for its own security.
The French Norwegian agreement effectively repeats, and in some areas expands, the mutual defence obligations outlined in Article 5 of the NATO treaty.
Four Areas of Cooperation
The agreement covers four principal areas.
Operational cooperation in Scandinavia
France is among the most active NATO allies in Northern Europe, and the agreement is designed to facilitate closer military coordination in the region.
Planning, infrastructure and pre-positioning of military equipment
The agreement strengthens France’s integration into Norwegian national planning and allied contingency planning during emergencies or wartime. The objective is to enable the rapid deployment of reinforcements from a major European ally.
Military exercises and manoeuvres
France is already one of the countries conducting the largest number of military exercises in Norway. The agreement establishes a more structured and binding framework for these activities.
Defence industrial cooperation
Expanding cooperation is considered vital to ensuring that Norwegian industry plays a central role in major European defence programmes, thereby strengthening both emergency preparedness and industrial competitiveness.
A Radical Shift in French Nuclear Doctrine
In 2026, France began moving towards a fundamental shift in its approach to nuclear deterrence.
Since acquiring its nuclear bomb in 1960, Paris has maintained complete independence regarding nuclear weapons. This year, however, Macron proposed a major change in doctrine. Allied countries could now participate in French nuclear exercises, while France’s strategic nuclear forces could potentially be deployed on European territory.
Given that this concerns air based forces, it would represent a significant movement of French ASMP-A cruise missile carriers closer to Russia.
Norway, Sweden and Poland, because of their geographical proximity to Russian territory, are viewed as posing the greatest strategic threat to Moscow.
That threat is no longer theoretical.
In September 2025, France deployed three Rafale fighter jets from Air Base 113 in Saint Dizier, one of France’s nuclear air bases, to airfields in Poland.
Russia and Belarus Rehearse a New Nuclear Scenario
The developments in Norway coincided almost perfectly with nuclear exercises conducted by the Russian and Belarusian armed forces.
The exercises were impressive and at times surprising, culminating in a series of test launches.
Alongside launches of the Yars and Sineva ballistic missiles, the Russian military also tested its Zircon and Kinzhal hypersonic missiles, while Belarus launched an Iskander missile at the Kapustin Yar test range.
The most significant change lay in the exercise scenario itself.
Traditionally, military planning follows an escalation ladder in which an enemy attack is initially countered with tactical or non strategic nuclear weapons, before escalating to a global confrontation that ultimately leads to a decisive response by strategic nuclear forces.
This time, however, Russian and Belarusian forces appeared to adopt a markedly different approach.
Throughout the year, discussions focused on an integrated strategy for defeating an adversary by combining tactical and operational weapons systems with the strategic nuclear arsenal.
Remarkably, the discussion was not centred on an all out nuclear war.
Instead, it appeared to revolve around the concept of a “limited nuclear war”, in which opposing forces are not merely halted but defeated almost simultaneously through the use of nuclear weapons at every level of warfare.
Is Europe Heading Towards Nuclear Confrontation?
To an outside observer, the situation may appear to be yet another step towards nuclear war and an inevitable military confrontation between Russia and parts of Europe.
In reality, the picture is not quite so bleak, although there is little reason for excessive optimism.
Macron’s initiative to extend France’s nuclear umbrella across Europe will likely fade quietly after he leaves office next year.
The French president cannot seek a third term, and his successor is unlikely to embrace the idea of expanding France’s nuclear obligations. Instead, the next administration may effectively distance itself from Macron’s proposal altogether.
Russia’s position on nuclear weapons has long been established.
It is laid out in the document titled Foundations of Russian State Policy in the Field of Nuclear Deterrence, an updated version of which President Vladimir Putin signed in November 2024.
The document lists only four circumstances that could lead Moscow to use nuclear weapons:
- Receipt of reliable information about ballistic missile launches targeting Russia and or its allies.
- The use of nuclear weapons or other weapons of mass destruction against Russia and or its allies.
- Enemy attacks on critical state or military facilities that would undermine Russia’s nuclear response capability.
- Conventional military aggression against Russia or Belarus, as members of the Union State, that poses a serious threat to their sovereignty or territorial integrity.
So far, none of these conditions has been met.
Moreover, as the United States gradually reduces its commitments to Europe, the likelihood of such scenarios may diminish further.
It is difficult to imagine France acting alone to launch pre-emptive nuclear strikes against Russian territory.
Nevertheless, the possibility of a sharp escalation remains.
Should the situation in Ukraine deteriorate dramatically because of successful Russian military operations, European states could decide to deploy troops directly to Ukrainian territory and abandon hybrid warfare in favour of a broader conflict with decisive strategic objectives.
In such a scenario, the likelihood of European countries resorting to nuclear weapons, and Russia responding in kind, would increase substantially.
