WHEN DONALD TRUMP pulled out of the Intermediate-range Nuclear Forces (INF) Treaty in 2019 most European states were aghast. They agreed that Russia had cheated on the cold-war pact, which prohibited all ground-based missiles (conventional and nuclear alike) with ranges between 500km and 5,500km. But they thought Mr Trump’s decision reckless and liable to start an arms race. Who in Europe would host such missiles anyway? Pretty much everyone, it turns out.