Macron Announces Expansion of French Nuclear Arsenal and Enhanced European Cooperation

French President Emmanuel Macron announced on Monday that France will increase the size of its nuclear arsenal for the first time in decades and significantly intensify nuclear weapons cooperation with eight European allies. This move is part of a 'major' strengthening of France's deterrence doctrine, aimed at addressing growing concerns among European leaders about wavering US commitments to help defend the continent.

In a speech delivered from the Île Longue nuclear submarine base in Brittany, Macron stated that Paris could deploy nuclear-capable Rafale fighter jets to partner countries such as Germany and Poland. However, he emphasized that there would be no sharing of decision-making on the use of these weapons, with the 'ultimate decision' remaining the responsibility of the French president.

Macron cited a 'period of geopolitical upheaval, fraught with risk,' as the reason for this strategic shift. He mentioned Russia's war against Ukraine, China's expanding military power, and recent changes in US defense strategy as key factors necessitating Europe to take more direct responsibility for its own security.

The French president announced the 'gradual implementation of what I would call advance deterrence', which involves considering France’s deterrence strategy deep within the European continent while respecting sovereignty. Under unspecified circumstances, French 'strategic assets' could be deployed in other European countries. Talks on enhanced cooperation had already started with the UK, Germany, Poland, the Netherlands, Belgium, Greece, Sweden, and Denmark.

Macron's speech was described as 'the most significant update to French nuclear deterrence policy in 30 years' by Bruno Tertrais of France’s FRS thinktank. The move comes amid growing concerns about US reliability in defending Europe, particularly following Donald Trump's rapprochement with Russia and tougher posture towards traditional transatlantic allies.

France currently possesses an estimated 290 nuclear warheads, the fourth-largest arsenal globally after Russia, the United States, and China. Macron emphasized that this increase is not part of an arms race but is essential to maintain France's deterrent capabilities in the face of multiple threats.

Macron also announced that France would stop disclosing the figures for its nuclear arsenal, marking a shift in transparency. This decision comes as Macron seeks to balance political considerations with the need to appear credible to allies, particularly ahead of next year's presidential election where a far-right National Rally candidate could win.

Yannick Pincé, associate professor of history at the Université Sorbonne Nouvelle, noted that Macron needed to deliver a speech that was both politically acceptable and credible to allies. 'He was walking a tightrope, and from my point of view, he succeeded rather well,' Pincé said.

Macron's doctrine maintains that the decision to use nuclear force 'belongs solely to the President of the Republic,' rejecting explicit guarantees to partner countries. However, some allies may be dissatisfied with this stance, particularly Germany, which has been pushing for more cooperation. Darya Dolzikova, a senior research fellow at defense think-tank RUSI, noted that joint decision-making was never going to be on the table.

The adapted doctrine is described as 'perfectly complementary to that of NATO,' both strategically and technically. Macron's speech extends the principles of the Northwood Declaration, an agreement between the UK and France signed last year, to non-nuclear allies. This approach aims to share the burden without compromising French decision-making authority.

Domestic criticism of the speech has been limited, with Marine Le Pen and Jordan Bardella of the National Rally party stating that France must retain exclusive control over its ultimate decision-making while engaging in dialogue with partners. The question remains whether future administrations will continue Macron's doctrine.