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France has increased the transparency of its nuclear arsenal and doctrine over the years, although it chooses not to discuss some issues for national security reasons.[5] President Macron’s announcement in March 2026 that France would no longer disclose how many nuclear warheads compose the arsenal constituted a rupture with policy established over the previous 30 years.[1]
Regarding the French nuclear doctrine, this is made public through regular presidential speeches and through ‘White Books’ or Strategic Reviews which are also updated regularly. France translates key documents into English and has organised events, for instance on the margins of the Review Conference of the Nuclear Non-Proliferation Treaty (NPT), to explain and discuss the French doctrine.[2] It has published detailed information, particularly in the NPT context, related to specific elements of the doctrine, for instance negative security assurances.[2] The doctrine is also explicated by publications from the Ministry of Defence.[3]
Concerning its nuclear arsenal, France historically declared a warhead ‘ceiling’ (less than 300), though it never disclosed the precise number of warheads it possessed.[3] This changed in 2026, when President Macron announced that ‘to put an end to any speculation, [France] will no longer release figures on [its] nuclear arsenal, as [it] ha[s] done in the past’.[1]
France also does not disclose any information on its fissile material holdings for nuclear weapons, but prefers to emphasise that the country has stopped producing fissile material for nuclear weapons and dismantled the fissile material facilities it previously used for weapons purposes.[1]
However, France is more forthcoming on information related to nuclear weapons delivery systems, with successive presidents updating the public on the number of ballistic missiles or cruise missiles possessed by the French strategic forces, as well as the number of submarines and aircraft that are dedicated to the nuclear mission.[3][4]
France has also voluntarily released information regarding its nuclear weapons modernisation programmes, in particular to inform Parliament, which controls funding for the nuclear arsenal. Since the early 2000s, information has been provided to the public on budgets, including regarding strategic systems and related activities for the nuclear deterrence mission.[5]
More generally, France has stated that it supports transparency as a strategic risk reduction tool, as long as it does not undermine national security. Transparency is seen as a confidence-building mechanism and a way to limit misperceptions and the risk of misunderstanding.[6] In that sense, France takes part for instance in the Hague Code of Conduct (HCoC) against the proliferation of ballistic missiles but also other multilateral arms control mechanisms (such as the Space Registration Convention and United Nations Register of Conventional Arms (UNROCA).
France has publicised some voluntary transparency measures it took over the years, in particular the invitation of international visitors to its former fissile material production facilities, its now-dismantled ground-based missile site, and its former nuclear test site in French Polynesia.[2] It also hosted two transparency visits for international observers to its space launch site in Kourou, French Guiana, as part of its implementation of the HCoC.
In addition to its direct transparency practices, the French government funds the publication and translation of work on French nuclear deterrence practices. This includes, for instance, books written by former or current officials, or of non-officials commissioned by the French government to try to greater understanding of the French doctrine.[6]
Since 2015, France has declared that it possesses three sets of sixteen M51 submarine-launched ballistic missiles (SLBMs), for a total of 48 missiles for deployment on four ballistic missile submarines, and 54 nuclear-armed, air-launched cruise missiles (ASMPA) that can be carried by two squadrons of Rafale aircraft or one squadron of Rafale marine aircraft.
President François Hollande made this announcement in his 2015 speech dedicated to French nuclear deterrence.[1] This information was last repeated in France’s National Report to the Preparatory Committee of the Nuclear Non-Proliferation Treaty (NPT) in 2025.[2] It was not included in the speech of President Emmanuel Macron in March 2026.[3]
Historically, the 1972 Livre Blanc was the first document to give information about the number of ballistic missiles and nuclear squadrons in service. Specifically, it indicated that at the time, France was operating nine airborne nuclear squadrons of Mirage IV, two ground-launched ballistic missile squadrons deployed at Plateau d’Albion, and one nuclear ballistic missile submarine (SSBN), with three others planned to enter service by 1980.[4]
President Mitterrand gave more precise information in his speech of 1994.[5] On that occasion, the French president indicated that the French forces were composed of five SSBNs, each equipped with 16 ballistic missiles able to carry six nuclear warheads. He explained that to accommodate the rotation of the SSBNs, the ballistic missile stockpile was composed of 64 M4 ballistic missiles.
Regarding the French strategic air forces at the time, these were composed of eighteen Mirage IV aircraft and an unspecified number of Mirage 2000 N and Super Étendards, equipped respectively with 15 and 45 air-ground missiles. Up until that date, France still possessed ground-based nuclear forces; President Mitterrand indicated in his speech that eighteen S3 missiles were deployed at the Plateau d’Albion at the time.
Last updated: 22 April 2026 18:42
Since the White Book on Defense of 1972, France has been open about the various components of its nuclear arsenal, and in particular, has indicated which types of delivery vehicles it possesses and operates.[1]
Official documents and speeches have confirmed that France currently operates intercontinental submarine-launched ballistic missiles (SLBMs) carried by its nuclear-powered submarines, and air-launched cruise missiles carried by its Rafale aircraft.[2][3] The ballistic missile submarines are dedicated only to the nuclear mission, whereas the Rafale aircraft can be tasked with carrying the nuclear ASMPA cruise missiles, or tasked with other conventional missions.[2] The range of the SLBM is declared to be around 10,000 km.[2]
Historically, France also possessed nuclear-armed ground-launched ballistic missiles of various types, and nuclear-armed gravity bombs, but those have been dismantled as announced in various documents.[4]
Last updated: 22 April 2026 18:42
France announced in 1996 that it had stopped the production of fissile material for nuclear weapons and had started the dismantlement of its production facilities (Pierrelatte and Marcoule). As such, there are no longer any operational facilities producing fissile material for nuclear weapons in France.
France stopped the production of plutonium for nuclear weapons in 1992 and of highly enriched uranium for this purpose in 1996. President Chirac announced during a TV interview that the Pierrelatte facility would close on 22 February 1996.[1] The decommissioning of the Pierrelatte enrichment plant started in 1997 and will continue until 2040. The dismantlement of the G1, G2 and G3 plutonium-producing reactors at Marcoule has been completed.[2] France has organised several visits for international observers to the former production sites.[3]
Last updated: 22 April 2026 18:42
France does not disclose its total holdings of low-enriched uranium, highly enriched uranium, or plutonium. However, it has transparently dismantled the facilities that it formerly used to produce fissile material for nuclear weapons (in Pierrelatte and Marcoule).
France has not explained its decision not to communicate on its holdings of fissile material. At the Review Conference of the Nuclear Non-Proliferation Treaty in 2000, it stated that it does not have any weapon-grade fissile material in excess of its military requirements.[2] France has stated on many occasions that it stopped the production of fissile material for nuclear weapons in 1992 (plutonium) and 1996 (highly enriched uranium). France dismantled its fissile material production factories in an irreversible manner in the 2000s.[1]
Last updated: 22 April 2026 18:42
France has not made a full statement regarding the use of artificial intelligence (AI) in the development, deployment, and employment of French nuclear weapons, but has indicated that it refused to ‘entrust the decision of life or death to a machine that would act fully autonomously and escape any form of human control’.[1]
Regarding the use of AI in defense matters generally, French Defense Minister Florence Parly indicated in 2019 that the development of new technologies by France would be pursued on the basis of three principles: ‘abiding by international law, maintaining a sufficient human control, and ensuring the permanent responsibility of the chain of command.’[1]
In 2022, France supported a joint statement with the United Kingdom and United States according to which the three states ‘will maintain human control and involvement for all actions critical to informing and executing sovereign decisions concerning nuclear weapons employment’.[2]
Last updated: 22 April 2026 18:42
France has regularly disclosed information about the planned modernisation of its nuclear delivery vehicles and the associated nuclear-powered submarines. Public discussion of these programmes is available through parliamentary documentation in particular.
France has announced publicly that since 2017, it has been actively renewing the two components of its nuclear arsenal (oceanic and air-delivered). The strategic oceanic forces will be equipped with a new version of the M51 intercontinental ballistic missile (ICBM), and the construction of a third generation of nuclear-powered ballistic missile submarines has been launched (SNLE 3G). The first SNLE 3G is due to enter service in 2036. In March 2026, President Macron specified that it would be named ‘L’Invincible’.[1]
The airborne nuclear component will be equipped with new hypersonic cruise missiles (ASN4G), including new warheads. This missile is being developed by MBDA and is also due to become operational starting in 2035. It will initially be integrated on the Rafale F5 aircraft, and later, on the Next Generation Fighter (NGF), an aircraft that is planned for production in the framework of the European Future Combat Air System (FCAS) programme.[2]
Budgets and rationales for these programmes have been published by the Parliament, with outputs from programme managers of the Ministry of Armed Forces. The government has stated that this modernisation is necessary to preserve the robustness and credibility of French nuclear deterrence in the changing strategic context and given the rise of new threats.[3]
Last updated: 22 April 2026 18:42
Since 1982, France has provided negative security assurances to more than 100 non-nuclear-weapon states that comply with their non-proliferation obligations under the Nuclear Non-Proliferation Treaty (NPT).[1][2]
France specifies that its negative security assurances apply to countries that are parties to the NPT and in compliance with their non-proliferation obligations, and that these assurances do not affect France’s right of legitimate self-defence as recognised in the UN Charter.[3]
This commitment by France, as well as by the other four ‘nuclear-weapon states’ defined in the NPT, was enshrined in Resolution 984 adopted by the UN Security Council (UNSC) in 1995, and reiterated in UNSC Resolution 1887 (2009) and Resolution 2310 (2016).
In 2015, the negative assurances given by France to non-nuclear-weapon states were repeated by the President of the Republic, who recognised that it was ‘legitimate’ for these states to expect such assurances.[3]
On 4 August 2022, the United States, France and the United Kingdom published a joint statement at the NPT Review Conference reiterating their commitment to security assurances for non-nuclear-weapon states.[4][5]
Last updated: 22 April 2026 18:42
French Presidents have disclosed in public speeches the country’s policy regarding the employment of nuclear weapons. Many official public documents, such as the 2025 Strategic Review, also formalise the French nuclear doctrine, which is strictly defensive and limited to extreme circumstances of self-defence. While the doctrine has adapted to changes in the international environment over the years, the willingness for Presidents to discuss the doctrine in public speeches has been consistent since Charles de Gaulle’s first speech on the matter in 1959.[1]
In 2026, President Macron reiterated the French policy regarding the employment of nuclear weapons.[2] This policy had previously been formalised in the National Strategic Review, updated in July 2025,[3] and in a document published by the Ministry of Armed forces in 2026.[4] Specifically, the employment of nuclear weapons is limited to ‘extreme circumstances of self-defence’, and the President is the only one mandated to determine if an attack, coming from a state, but regardless of its form (nuclear or not), endangers the vital interests of the country. If the president determines that an attack reaches that threshold, he or she may decide to employ nuclear weapons to inflict damage from which an adversary ‘could not recover.’
The French doctrine also states that if an adversary does not perceive that it has infringed upon France’s vital interests, a nuclear warning strike may be conducted to reestablish deterrence. France specifies that nuclear weapons are political weapons and refuses any notion of nuclear warfighting.[3]
Finally, French nuclear doctrine encompasses the concepts of shouldering, according to which conventional forces are necessary to increase the credibility of nuclear deterrence, and of ‘forward deterrence’, meaning that the French vital interests have a European dimension and more specifically, that eight countries are involved in a nuclear deterrence partnership with France (United Kingdom, Germany, Belgium, Netherlands, Denmark, Sweden, Poland, and Greece).[2]
Last updated: 22 April 2026 18:42
France has been a signatory state of the Hague Code of Conduct against the Proliferation of Ballistic Missiles (HCoC) since its adoption in 2002 and notifies its ballistic missile tests and space launches in the framework of the Code. These are accessible to all states that subscribe to the HCoC via a dedicated website.
According to the French National Report submitted to the Preparatory Committee meeting of the Nuclear Non-Proliferation Treaty in 2025, between January 2015 and January 2025, France issued 97 pre-launch notifications, equal to the number of French space and ballistic missile launches conducted during that period. The report also noted that in fulfilment of one of the provisions of the HCoC, France hosted an inspection by international observers at the Guiana Space Centre in Kourou (French Guiana) in 2011. A second visit to Kourou was organized in December 2022.[1]
Nuclear exercises conducted by the French Air Force are announced ahead of time via the Notice to Airmen (NOTAM) system and planned in a predictable manner.[2]
Last updated: 22 April 2026 18:42
France does not mention strategic non-nuclear technologies explicitly in its nuclear doctrine, however the French doctrine clearly indicates that the decision on whether or not to the employment of nuclear weapons in response to an attack does not depend on the type of technology used in the attack, but on the level of damage caused and whether it puts in jeopardy the vital interests of the French state. This can include attacks using non-nuclear strategic weapons, including chemical, biological, or large-scale conventional attacks.
The official French doctrine also mentions air and missile defence and deep strike capacities as technologies that may be used to support the credibility of nuclear deterrence. Therefore, these could also be considered as strategic non-nuclear technologies though the doctrine does not label them as such. However, the French nuclear doctrine preserves a fundamental barrier between conventional operations and a potential use of nuclear weapons.[1]
Last updated: 22 April 2026 18:42
Until March 2026, France consistently indicated that it possessed less than 300 nuclear warheads, both in written documents and in Presidential speeches. However, in a significant policy change, President Emmanuel Macron announced on 2 March 2026 that this number would be increased and that it would no longer be made public.[6]
The first time the French Government disclosed precise numbers for its nuclear stockpile was in 1994, when President François Mitterrand publicly stated that France possessed almost 500 weapons.[1] In 2008, President Nicolas Sarkozy mentioned the reductions in the stockpile carried out since the end of the Cold War and indicated that the French arsenal would be composed of less than 300 nuclear warheads from that time forward.[2] Presidents François Hollande and Macron reiterated this statement in 2015 and 2020, respectively.[3][4] The approximate data was also available in France’s transparency reports in the context of the Nuclear Non-Proliferation Treaty.[5]
Last updated: 22 April 2026 18:42
France does not currently reveal any information on the explosive yields of the two types of nuclear warheads it possesses: the Oceanic Nuclear Warhead (TNO) used on submarine-launched ballistic missiles (SLBMs) and the Airborne Nuclear Warhead (TNA) used on air-launched cruise missiles. However, French doctrine establishes that all French nuclear weapons are deemed to be ‘strategic’,[1] and thus, they might not reach the low yield levels more commonly associated with sub-strategic or tactical nuclear weapons.
President François Mitterrand declared in 1994 that a warhead coupled to the SLBMs used by France at that time had a yield of 150 kilotons, and that the yield of warheads deployed on French cruise missiles at that time was 300 kilotons.[2] Since that time, no information has been published at the official level on the issue of nuclear warhead yields, and information reported by the media is never backed by credible assessments.
Last updated: 22 April 2026 18:42