In our weekly defence newsletter, Shashank Joshi explains why “the war in Iran is at a crossroads” https://www.economist.com/middle-east-and-africa/2026/03/23/the-war-room-newsletter-trump-is-scrambling-for-options-in-iran?taid=1d50bfaf-2b42-4bed-ad94-ae5fba7efd2a