Europe wanted defence factories. China controlled the ingredients.

China placed seven medium and heavy rare earths under immediate export control, adding a licensing step to supply chains feeding European missiles, motors and sensors. This was not a universal ban, and no named programme was shown to have stopped.

But licences can delay without denying, and a defence prime may discover the exposure several tiers below its own factory. The platform can be European, the critical material Chinese, and the delivery calendar somewhere between them.

This is the part the brochure is unlikely to discuss. Local assembly or a domestic label is mistaken for industrial independence. The actual control sits in engines, tooling, production know-how, qualified people, software, test equipment and recurring access to foreign specialists. That is the control point hiding behind the headline fact: Europe wanted defence factories.

For Europe, a screwdriver is not sovereignty.

Nobody has to cancel the deal. A licence can wait, a delivery can move, a bank can decline or a technical approval can remain under review. Any of those can leave the local factory open but unable to produce, certify or support the item that matters. The polite language does not make the operational gap polite. For Europe, the warning is captured by what followed: China controlled the ingredients.

This is where scenario planning has to become specific. Do not write 'seek alternate supplier' in the risk register and move on. Name the supplier. Confirm the legal route. Price the integration. Hold the stock. Train the people. Until those steps are complete, the alternative is a comforting noun rather than an operational capability. The exercise has a concrete starting point in this case: Europe wanted defence factories.

Do not ask whether the supplier is friendly. Ask questions that can be evidenced. Can production continue for two years if the foreign partner walks away? What can the local plant manufacture without imported kits? Which processes can national engineers alter without foreign approval?

The next three questions belong in the operational plan, not an annex. Who owns the tooling, source code and certification evidence? How many locally trained people can solve an unfamiliar failure? What percentage of value is local, and what percentage of veto power is local? If nobody owns the answer, nobody owns the risk.

The buyer still has options: define transfer of competence separately from transfer of assembly work, secure technical data and rights to modify the product and develop suppliers for the components that actually stop production. These measures are rarely as exciting as the platform. They are often what make the platform usable.

The finance ministry should see this risk too. Resilience can look expensive because its cost appears in the tender. Dependence often looks free because its cost appears later, in emergency purchases, redesign work, lost readiness and political concessions. That accounting difference does not make dependence cheaper. It merely hides the invoice. The headline fact, 'Europe wanted defence factories', should carry that exposure in its score.

Self-reliance does not mean manufacturing every screw. It means owning enough knowledge, rights, people and alternatives to keep the critical capability alive. That distinction matters here: China controlled the ingredients.

The final test for Europe is simple: can the domestic factory build, modify, test and sustain the item after the foreign partner leaves? If the honest answer begins with 'provided that somebody else agrees', that condition belongs on the first page of the procurement decision, not in an annex nobody reads.

A factory that depends on imported kits may create jobs and still create almost no freedom of action. The real transfer is the ability to solve the next problem without calling the original supplier.