Tom Gardner, our Africa correspondent, explains how “civilisational thinking” shapes conflicts in the region https://www.economist.com/middle-east-and-africa/2026/10/28/analysing-africa-newsletter-a-clash-of-civilisations-in-the-horn?taid=6ae1ee58f64aaa0001a438b8&utm_campaign=trueanthem&utm_medium=social&utm_source=twitter