The U.S. is excellent at producing multimillion-dollar weapons systems, but it hasn’t been as quick to adapt to low-cost, high-impact tools like $300 drones that can take out a tank or an attack helicopter. Ukraine benefits from some of the world’s best drone pilots and a rapid feedback loop that lets them refine tactics and hardware in hours rather than weeks. The West, by contrast, often moves more slowly because of layers of rules, regulations, and sign-offs.