How Much Protection Can French Nukes Really Offer?

President Emmanuel Macron’s plan to extend the area protected by French nuclear weapons is a historic step, but it comes with challenges.

By Juraj Majcin

March 13, 2026

By extending its nuclear weapons policy to European partners and deepening cooperation with countries such as Germany, Poland, Denmark, and Sweden, Paris is reinforcing European deterrence at a time when Russia is growing more aggressive, and US security guarantees appear increasingly uncertain.

The idea that France’s interests have a “European dimension” is not new. Since the 1990s, its presidents have hinted that French deterrence cannot be separated from the security of the continent. What is new is that Paris is now translating words into action.

It is modernizing its nuclear forces, preparing a new generation of ballistic missile submarines, and developing a new supersonic cruise missile, which is expected by 2035.

But the true shift is political and operational. For decades, French nuclear doctrine was rooted in a strict Gaullist tradition of autonomy, and Paris avoided integrating its deterrent with allies. That is beginning to change.

While the final decision over using nuclear weapons will always remain with the French president, joint nuclear exercises and the potential deployment of nuclear-capable Dassault Rafale aircraft to other countries represent a major shift.

The “use” of nuclear weapons does not necessarily mean detonation, but can also take the form of signaling. The deployment of French nuclear-armed fighter jets to countries such as Germany and Poland would send a message to the Kremlin that Paris may be ready to conduct nuclear deterrence operations alongside its allies and act on their behalf.

From an operational perspective, such forward deployment would give France greater strategic depth by enabling strikes against targets inside Russia and reducing reliance on long deployments and air-to-air refueling. Although it would expose participants to possible nuclear or conventional attack by Russia or other enemy states as they tried to destroy French nuclear assets, the seven non-nuclear participants (Germany, Poland, the Netherlands, Belgium, Greece, Sweden, and Denmark) may feel the benefits outweigh the risks. The UK will also participate, although its nuclear deterrent is assigned to NATO, meaning targeting is shared with the US (although the finger on the button is the prime minister’s).

The French pledge of forward deployments and joint exercises is welcome, although credible deterrence depends on numbers. France maintains roughly 290 deployed warheads and, although Macron has announced plans to boost this number, the gap with Russia is substantial.

Russia fields around 1,500 deployed strategic warheads, and a similar number are assigned to potential battlefield use.

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Analysts have warned that relatively small arsenals, such as those of France (just under 300 warheads) and the UK (around 225 warheads), might have difficulty penetrating Russia’s layered air defenses. Not every missile reaches its target, as some fail and others are intercepted, and when several warheads are directed at a single hardened target, they can interfere with one another.

Paris is developing a new warhead, which is designed to penetrate advanced air defense systems, yet it will still not be able to offer the scale or capacity for redundancy of the US arsenal.

France could increase deterrence by shifting its targeting from hardened military facilities to major urban centers, but morally and legally, this would be highly controversial and politically explosive.

Nor does French nuclear doctrine include tactical nuclear weapons for battlefield use. Russia, in contrast, allows for their use, including low-yield strikes. In such scenarios, NATO states would still be heavily dependent on American B61 gravity bombs. If these were made unavailable, European countries would be left with no response except the UK and French strategic weapons.

The framework of France’s advanced deterrence also remains unclear as Paris is not a member of NATO’s Nuclear Planning Group (NPG) and does not intend to join. This ambiguity creates additional uncertainty for Moscow, which can strengthen deterrence, but it means France is outside its allies’ planning structures.

For France’s advanced deterrence to be credible and operationally coherent, Paris would need to align the bilateral nuclear steering groups it has established with Germany and the UK with NATO’s NPG framework.

French domestic politics are a further factor in the credibility of its new nuclear posture. The president’s opponents in the National Rally and La France Insoumise oppose deeper European integration of the country’s nuclear forces, and it is unclear if Macron can anchor the shift firmly enough for it to survive a change of government.

Despite these limitations, France’s decision should be recognized as a key step to strengthening European deterrence. But its durability will depend on close coordination with European partners and NATO, as well as domestic political will.

Juraj Majcin is a Policy Analyst with the European Policy Centre. He works mainly on European and transatlantic security and defense cooperation, as well as hybrid threats. He was also a 2024 James S. Denton Fellow with the Center for European Policy Analysis (CEPA).

Europe’s Edge is CEPA’s online journal covering critical topics on the foreign policy docket across Europe and North America. All opinions expressed on Europe’s Edge are those of the author alone and may not represent those of the institutions they represent or the Center for European Policy Analysis. CEPA maintains a strict intellectual independence policy across all its projects and publications.