At this month’s NATO summit in Ankara, allies announced billions of dollars in new arms deals and reaffirmed their commitment to spend more on defense. European governments have made the pledge, and the money is real: European defense spending has doubled since 2019, and by 2030, European NATO member countries are projected to spend in excess of €800 billion a year, up €300 billion from 2025, with equipment spending alone nearly doubling.

But committing money is the easy part. The harder question is whether Europe’s defense industry can turn it into equipment fast enough to matter. Europe’s largest defense manufacturers’ order books now average more than five years for production, and some are closer to nine. Money is flowing in faster than industry can turn it into equipment. But a purchase order is not equipment that can be deployed on the ground and the air.

The bottleneck sits in the defense industrial system. Deterrence relies on the chain from funding to contracts, then through production, deployment into services, then rapid innovation in the field. Europe’s next goal comes after the spending promise. The continent fields six times as many weapons platforms as the United States, because countries have long duplicated capabilities rather than pooling them. Production ends up split across many small runs that never reach an efficient scale. Ukraine, under pressure, has shown how fast a defense system can move, adapting tactics in weeks and building drone detection networks from consumer electronics. Europe needs to catch up and then accelerate.