The ballistic missiles that arced from Yemen to Israel on October 31st set several records. They probably travelled farther than any other ballistic missile fired as an act of aggression, having crossed at least 1,600km. They were intercepted by Israel’s Arrow missile-defence system above the Negev desert. It was the first time that Arrow, deployed for 23 years, had taken out a surface-to-surface missile. It was also the first ever combat interception in space, according to two Israeli officials. The incident is a small illustration of how the proliferation of missiles with growing range and precision is changing the military landscape of the Middle East.