President Emmanuel Macron has unveiled a French-led “forward deterrence” plan that would allow French nuclear-capable forces to operate from partner countries across Europe, a move Paris says will broaden the continent’s strategic umbrella. He named eight initial partners — Germany, the United Kingdom, the Netherlands, Poland, Denmark, Sweden, Belgium and Greece — and described the initiative as offering allied participation in deterrence exercises and, in defined cases, temporary basing of French strategic assets on allied soil.
Macron presented the package at the Île Longue submarine base, stressing that the measure is intended to be compatible with the existing NATO framework and with the nuclear roles of the United States and the United Kingdom. He also insisted that Paris will keep sole authority over nuclear decision‑making, preserving the long‑standing French principle of autonomy in the ultimate use of force.
Germany has emerged as the plan’s pivotal partner. Paris and Berlin announced a joint high‑level nuclear affairs steering group to coordinate theoretical dialogue and strategic cooperation, and vowed that German conventional forces would take part in French nuclear exercises and joint visits to strategic sites. Paris framed the initiative as complementary to NATO’s deterrence arrangements rather than a replacement.
The announcement comes at a time of growing European anxiety about the reliability of U.S. extended deterrence after a return to the White House by Donald Trump, and amid heightened tensions with Russia. For some European capitals, deepening ties to France is presented as a form of insurance: a hedging strategy that complicates an adversary’s calculations without supplanting trans‑Atlantic guarantees.
Macron said France will increase its stockpile of nuclear warheads while keeping precise figures secret to preserve strategic ambiguity. Paris is already estimated to possess roughly 290 submarine‑ and air‑delivered warheads, and spends about €5.6 billion a year — roughly 13% of its defence budget — to maintain its nuclear forces.
The plan has won tentative public backing from several governments in Europe, with Poland, Sweden and Denmark offering favourable responses and Britain welcoming the proposal. But it has drawn criticism at home and from disarmament advocates. France’s far‑right National Rally warned that dispersing French nuclear assets would imperil national sovereignty, while anti‑nuclear groups warned that expansion of the arsenal and closer integration with partners could undermine regional stability and the spirit of the Non‑Proliferation Treaty.
The timing is politically charged: Macron is moving ahead of next year’s presidential election in France, and analysts note that concerns about the potential of a Eurosceptic government in Paris have helped push some European allies closer to Paris. Operational, legal and diplomatic questions remain: how command and control would be managed during temporary basing, what safeguards would govern allied host participation, and how Moscow might react to a visible deepening of European nuclear cooperation.
Beyond immediate contingencies, the initiative carries broader strategic consequences. It could strengthen an emergent European defence identity but risks complicating NATO cohesion, reviving arms‑race dynamics with Russia, and opening fresh debates about nuclear transparency, arms control and the long‑term health of non‑proliferation norms.