Macron Proposes ‘Forward Deterrence’ Nuclear Doctrine as European Security Architecture Fractures

French President Emmanuel Macron is announcing a fundamental rethinking of France’s nuclear deterrence doctrine today, potentially including deployment of French nuclear weapons to other European countries for the first time—a historic break from six decades of Gaullist independence. Speaking from the Île Longue submarine base in Brittany, Macron is expected to outline how French nuclear weapons fit into Europe’s security amid recurring tensions with U.S. President Donald Trump, with "undoubtedly some significant shifts and developments" anticipated.

The speech marks Macron’s second nuclear doctrine address since 2017. His 2020 proposal for "strategic dialogue" with European partners received minimal interest before Russia’s full-scale invasion of Ukraine and Trump’s return to power fundamentally altered the continent’s strategic calculus.

The Strategic Rupture

The timing reflects converging pressures. European leaders question the reliability of US security guarantees under President Trump, while Russia’s full-scale invasion of Ukraine, now entering its fifth year, brought war to the EU’s door and repeated threats of possible nuclear use from Russian President Vladimir Putin. European attitudes have shifted since Russia’s invasion and renewed doubts about US commitments under Trump’s second term.

German Chancellor Friedrich Merz said earlier this month he had held "initial talks" with Macron about nuclear deterrence and theorised publicly about German Air Force planes possibly carrying French nuclear bombs. Paris has been in talks with countries including Germany and Poland over how France could use its atomic arsenal to help protect the continent. Polish Prime Minister Donald Tusk has said that Poland "is talking seriously" with Paris about being protected by the French nuclear arsenal.

This is the first time a French president has openly raised the possibility of stationing French Nuclear Weapons outside France in peacetime, a potential break from France’s traditionally sovereign and tightly held nuclear doctrine. Last year, Macron said he was ready to discuss possible deployment of French aircraft armed with nuclear weapons in other European countries.

How This Differs From NATO Nuclear Sharing

Unlike the US model, where the United States stations around 100 nuclear bombs in Belgium, Germany, Italy, the Netherlands and Turkey, with aircraft from those non-nuclear states tasked with delivering US weapons in the event of conflict, France’s approach would be fundamentally different. There is no plan to share the decision to use nuclear weapons "It will always be up to the French president to decide," according to nuclear deterrence specialist Héloïse Fayet at French Institute of International Relations.

The ASMPA-R cruise missile is tailored to the Rafale, making it incompatible with allied fleets such as the F-35, meaning France would need to station its own aircraft and personnel abroad rather than transfer weapons or delivery capabilities. This represents a critical technical constraint that distinguishes any French proposal from existing NATO arrangements.

Given the reduced pool of available weapons, basing some French nuclear weapons abroad on the model of NATO nuclear sharing would require substantive costs and might disrupt the credibility of the entire system, according to analysis from Foundation for Strategic Research. France and the UK do not have nuclear doctrines that are compatible with the idea of extending their nuclear deterrence through stationing their weapons in other countries.

Credibility Questions and Arsenal Limitations

The arithmetic creates immediate doubts. France and the United Kingdom have 290 and 225 warheads respectively, or 515 in total—vastly less than Russia’s approximately 1,700 deployed strategic weapons and 1,000–2,000 tactical nuclear weapons, plus another 2,500 nondeployed weapons. If 290 nuclear warheads represent the value that France places on defending its existence, this price seems to neglect the scale of the European continent—continent-sized nuclear powers such as the US and Russia are deploying an arsenal of around 1,000 thermonuclear warheads.

Paris would face the far more difficult task of convincing its European partners that it is willing to risk its own complete annihilation on their behalf, and Paris’ allies would need to accept that mutual assured destruction between Russia and France would place any limited nuclear conflict squarely on the territories of the states in between—without those states having any ultimate say over decisions made by French leaders, according to analysis from Brookings Institution.

Domestic Political Minefield

Macron delivers his speech amid extraordinary domestic political turmoil. France entered a period of political instability unprecedented in the Fifth Republic after the 2024 legislative election resulted in a hung parliament split into three opposed blocs: the left-wing New Popular Front alliance (180 seats), Macron’s centrist Ensemble alliance (159 seats), and the far-right National Rally (142 seats).

Prime Minister François Bayrou’s government collapsed in September 2025 after a vote of no confidence, forcing him out after just nine months when he called a vote to pressure lawmakers to back his proposal to slash €44 billion from the 2026 budget. Sébastien Lecornu resigned as prime minister after less than a day in October 2025, making him the shortest-serving prime minister in French Fifth Republic history, triggered by threats from center-right Les Républicains and immediate threats of no confidence.

Both the far-right and the far-left in France have strongly opposed any "Europeanization" of France’s nuclear forces. Macron’s address could spark a backlash ahead of the 2027 presidential election, in which Marine Le Pen’s eurosceptic far-right is seen as having its best chance yet at winning the top job. Possible revisions to France’s nuclear deterrence policy could be among the most consequential decisions that Macron makes in his remaining 14 months as president.

European Strategic Autonomy vs. NATO Cohesion

President Macron announced he will deliver a new doctrinal discourse on nuclear issues in March 2026 expected to cover the "European dimension" of French deterrence, building on the July 2025 Northwood Declaration with the UK. France and Britain adopted a joint declaration in July that allows both nations’ nuclear forces, while independent, to be "coordinated".

Yet fundamental tensions remain. France is the only NATO member that does not participate in the alliance’s Nuclear Planning Group, reflecting its insistence on unilateral nuclear decision-making. While France is also a member of NATO, it maintains full independence over its nuclear forces while contributing to the alliance’s broader deterrence posture.

The Élysée stressed France’s nuclear offer "is in no way in competition with NATO," but the institutional architecture remains murky. European allies should be reassured that France’s proposal offers additional protection rather than replacing existing nuclear-sharing arrangements on the continent, which could only be achieved through bilateral engagement between France and the future U.S. administration.

Russian Response and Escalation Dynamics

In July 2025, Russia stated that France should not forget about Russia’s nuclear deterrent forces and nuclear doctrine. The Kremlin sought to frame the debate as a potential escalation, with Russia’s Foreign Intelligence Service alleging without evidence that Britain and France may be preparing to transfer nuclear weapons to Ukraine.

Russia revised its deterrence policy in 2024, lowering its bar for possible retaliation with nuclear weapons. According to Royal United Services Institute analysis, Russia’s expanding missile defense network around Moscow—including the A-235 missile defense complex and S-500 air defense system—may be capable of intercepting a meaningful portion of ballistic missiles launched toward the Russian capital, potentially complicating European deterrence calculations.

What to Watch

Macron’s speech will reveal whether France commits to concrete deployment plans or maintains strategic ambiguity. According to polls published in March 2025, 59% of French people support the idea of using France’s nuclear weapons to defend Europe, but translating public support into operational capability requires resolving fundamental questions about command authority, host nation financing, and NATO coordination.

France’s nuclear program currently represents 13.45% of its defense budget, and Macron made clear that any deployment of Rafale fighters abroad would need to be funded by the host nations. Whether Germany, Poland, or other potential hosts accept this burden-sharing model remains uncertain.

The broader question is whether Europe can construct a credible deterrent architecture absent reliable US guarantees. Increasing skepticism among Paris’ partners may limit Macron’s ability to act on European security and defense—if he wants to lead in these areas and preserve his political legacy as France’s pro-European president, he must lay out a reassuring domestic trajectory. With French politics in crisis and the 2027 presidential election looming, Macron’s window for reshaping European nuclear deterrence may close before his vision can be realized.