Berlin Enters France's Nuclear Circle

France and Germany sat down in Paris on May 27 for the first working session of their bilateral Nuclear Steering Group (n-tv, Deutschlandfunk). On paper, it is a Franco-German mechanism. In practice, it is part of a wider deterrence framework that now reaches across nine European states. None of those parliaments has voted on the arrangements being made in their name.

The trail leads back to March 2, when President Macron announced dissuasion avancée, or forward deterrence, from France's Île-Longue submarine base. France would increase its nuclear warhead stockpile for the first time since 1992 and stop publishing the size of its arsenal. Chancellor Merz signed a declaration creating the steering group. In the weeks that followed, Poland, Norway, Finland, the Netherlands, Belgium, Greece, Sweden, Denmark and the UK came into the framework through separate bilateral channels.

What Germany Actually Gets

Paris calls Berlin's new role co-gestionnaire doctrinal, or doctrinal co-manager. The phrase sounds weighty, but the substance is narrower: a strategic dialogue on how French nuclear forces, conventional capabilities and missile defence fit together. Germany will not help plan strikes, choose targets or shape the decision to launch. That power remains with the French president alone.

Germany's first practical gain is observer status at France's "Poker" nuclear exercise in September 2026. German jets could later provide fighter escort or aerial refuelling for nuclear-armed French Rafales (n-tv). Those are conventional support roles, not nuclear delivery.

Berlin already has a deeper nuclear role through NATO. At Büchel Air Base, German pilots train to deliver American B61 nuclear bombs, and Germany sits in the Nuclear Planning Group, the alliance's senior nuclear policy body. IPG-Journal judged the French arrangement "less substantial", with no "credible deterrence gain" unless Germany gets real planning input (IPG-Journal).

The point is insurance. Doubts about US reliability have become a standing feature of European security planning, and both Paris and Berlin need a visible bilateral success. The steering group gives them that. Its value is political hedging rather than new military capability.

Nine Democracies, No Legislative Process

The group was created by joint declaration under Article 4 of the Aachen Treaty, the 2019 Franco-German cooperation pact, so no fresh parliamentary ratification was required. Merz's security adviser Günter Sautter led the Paris session, with another meeting planned before Germany's summer recess (Stern, Deutschlandfunk).

The same executive-led pattern runs through the wider framework. Poland joined French nuclear exercises after the April Gdańsk summit. Norway signed the Narvik Arrangement on May 27. Finland submitted legislation to lift its ban on hosting nuclear weapons and is the only one of the nine where opposition parties have demanded a legislative process. Elsewhere, parliaments have been informed at most. They have not been consulted.

For Ireland, this is not an abstract institutional quibble. Austria, Ireland and Malta are EU member states legally bound by the Treaty on the Prohibition of Nuclear Weapons to oppose any form of nuclear assistance. Yet they have no institutional route to object inside the bilateral frameworks now being built around them. That matters in a country where neutrality is not a slogan but a political settlement with deep roots.

Untested Legal Lines

Several legal questions remain unresolved. A German tanker refuelling a nuclear-armed Rafale may look like ordinary military support, but whether it counts as "assistance" under the Non-Proliferation Treaty, the 1968 agreement barring non-nuclear states from acquiring or controlling nuclear weapons, has never been tested. Germany's Two-Plus-Four Treaty, the 1990 agreement that allowed reunification, bans German "control over" nuclear weapons. The French model is designed to stay below that line, but the line itself has never been defined in an operational setting.

By the time September's Poker exercise arrives, this framework will have moved through two rounds of bilateral talks, one observation mission and no parliamentary votes. The military substance is limited: Germany gets less from France than it already has through NATO. The democratic change is larger. Nine European countries are normalising executive-only authority over nuclear participation, treating the most dangerous weapons on earth as too sensitive for legislative debate. When does conventional participation in nuclear operations stop being conventional?