French nuclear jets train in Germany

Two French Rafales sat on the tarmac at Nörvenich air base near Cologne on 16 July, lined up beside two German Eurofighters. The distinction mattered. The Rafales can carry nuclear weapons. The Eurofighters cannot.

The exercise was not a handover of nuclear power, nor anything close to it. It was a rehearsal of the military plumbing around deterrence: aerial refuelling, coordination, warning systems and the conventional support that makes nuclear-capable aircraft usable. It was also the first joint drill after the March understanding between Emmanuel Macron and Friedrich Merz, under which France offered partners a closer role in the planes, sensors, alerts and exercises surrounding its nuclear deterrent (t-online, Le Monde). Germany is expected to take part in a French nuclear exercise this autumn (Deutsche Welle, Upday).

The move is meaningful, but only within clear limits. Germany is not becoming a nuclear power. It is moving closer to the conventional military work that sits around a deterrent whose launch authority remains entirely French.

France Controls the Weapon. The Constitution Says So.

The hard line runs through the French constitution. The president alone commands the nuclear arsenal (Conseil constitutionnel). Macron said in a 2020 doctrine speech that France’s "vital interests" had a European dimension, but he did not create shared launch authority (Élysée, 7 February 2020).

Germany has another boundary to mind. The Nuclear Non-Proliferation Treaty bars non-nuclear states from receiving nuclear weapons or control over them (UN NPT text). Berlin has said publicly that cooperation with France changes neither Germany’s non-nuclear status nor its place in Nato’s US-led nuclear sharing arrangements (Bundesregierung).

What is changing in 2026 is the machinery around the weapon. Earlier French offers are becoming steering groups, joint exercises and a coalition for integrated missile defence, which Paris describes as "purely defensive" (Élysée, 13 July 2026). Germany gets consultation and a place in the warning architecture. It does not get warheads. It does not get a launch code.

Eastern Allies Want Hardware, Not Doctrine

Poland welcomes any stronger European defence effort, but Warsaw is not pretending it can replace the American guarantee. Foreign Minister Radosław Sikorski compared the future US role to "cavalry behind the hill", still strategically necessary even if less visible on the ground (Bankier). Poland has opened its own steering group with Paris and is exploring French weapons depots on Polish soil, though no agreement exists yet (Rzeczpospolita).

Finland is taking a similarly practical view. Defence Minister Antti Häkkänen called a French nuclear shield for Europe "a massive, decades-long project" (Yle). Helsinki appears to put more value on French troops contributing to Nato’s forward forces in Finland than on doctrinal promises from Paris.

Italy shows where the enthusiasm runs out. Rome already hosts US nuclear weapons under Nato sharing, where the US retains custody while European allies take part politically, so the question of what decision rights France is offering is not theoretical (NATO). Prime Minister Giorgia Meloni skipped the Paris summit while Foreign Minister Antonio Tajani attended, joining the missile-defence coalition but keeping distance from Macron’s effort to present French nuclear power as a European shield (Euronews Italy). Rome’s message was plain enough: cooperate on air defence, but do not sign up to French leadership of European deterrence.

A Showcase Built on Industrial Wreckage

The display also has a political use. In June, France and Germany abandoned their joint sixth-generation fighter project, FCAS, after years of deadlock between Airbus and Dassault (IRIS, Le Monde). Days before the Nörvenich drill, Merz chose to buy American Tomahawk missiles for long-range strike, adding to Paris’s frustration.

Nuclear cooperation helps fill the space left by that industrial failure. It gives Macron and Merz something strategic to point to when the defence-industrial track has come apart.

There is still an awkward gap. The March understanding has not been published as a formal text. The public can see exercises, speeches and coalitions, but not the consultation procedures or the limits of what was agreed. France can make its deterrent more European in practice, but not in command. Before allies are asked to treat that as reassurance, Macron and Merz need to explain what consultation actually means.