A new estimate from the Congressional Budget Office suggests that the cost of building and maintaining the proposed “Golden Dome” missile defense system could reach roughly $1.2 trillion over two decades, far exceeding the $185 billion figure previously cited by Pentagon leadership. The ambitious program aims to significantly expand existing U.S. missile defense infrastructure. Plans include bolstering ground-based interceptors, upgrading sensor networks and enhancing command systems, while also introducing a major space-based component designed to identify, monitor and potentially intercept threats from orbit. This orbital layer would rely on a large network of satellites, including systems capable of engaging incoming...