French President Emmanuel Macron is set to provide an update on France’s nuclear doctrine on Monday, emphasizing Paris’ role in European security while ruling out shared control of its nuclear arsenal. The move comes as several European nations question the reliability of the U.S. nuclear umbrella under President Donald Trump’s leadership.
Although France and the U.K. maintain independent nuclear forces, most European countries rely heavily on the United States for deterrence. Recent U.S. actions and statements — including engagement with Russia on Ukraine and tensions with traditional allies — have prompted European capitals to seek reassurance.
Earlier this month, German Chancellor Friedrich Merz indicated discussions with France on the potential for a European nuclear deterrent. Macron has emphasized a broader “holistic approach to defense and security” rather than shared European control. Nordic and other pro-U.S. countries have shown cautious interest.
Questions persist over whether France’s stockpile can realistically protect the continent. Issues include cost-sharing, decision-making authority on launch protocols, and the possibility that a focus on nuclear forces could divert investment from conventional capabilities. France maintains roughly 290 submarine- and air-launched nuclear weapons, costing about 5.6 billion euros ($6.04 billion) annually.
NATO Secretary-General Mark Rutte has noted that building an independent European nuclear capacity would require substantial financial investment and could reduce the reliability of the U.S. nuclear umbrella, which currently stations about 100 nuclear bombs across Belgium, Germany, Italy, the Netherlands, and Turkey. Non-nuclear nations’ air forces would deliver these weapons under the “nuclear sharing” doctrine.
U.S. officials have reassured European allies that Washington will continue its nuclear deterrent commitments while modernizing its arsenal. French authorities emphasize that Paris does not intend to replace U.S. nuclear forces or challenge NATO. According to Etienne Marcuz of the FRS think-tank, France’s nuclear strategy is designed to inflict severe damage on adversaries with far fewer warheads than U.S. or Russian arsenals.
A key feature of France’s approach is “strategic ambiguity” — maintaining uncertainty about if, when, and where nuclear weapons might be deployed. While intended to strengthen deterrence, some European partners find this opacity challenging. Expanding France’s role would also require Europe to develop long-range missile capabilities currently unavailable on the continent.
Macron’s upcoming address at France’s nuclear submarine base in Brittany marks the traditional once-per-presidency review of the doctrine. Officials say the security environment has shifted since 2020, with Russia’s nuclear build-up and heightened rhetoric underscoring the need for credible deterrence.
France continues to assert that only its president has the authority to order a nuclear strike, a principle officials insist remains unchanged. The update will clarify what France can offer European allies while preserving national control over its strategic arsenal.
