The latest Intergovernmental Panel on Climate Change report identified the Sahel as a \u2018climate change hot spot\u2019, a region where human security is particularly threatened by the effects of global warming.\n \nWill Robson explores the area\u2019s war-torn history and investigates how climate change is acting as the catalyst to migration, violent disputes over water and the growth of brutal armed extremists. He hears from those caught in the middle of conflicts in Mali and the Lake Chad region and discovers how drought and rapid desertification are fanning the flames of violence.\n \nProduced by Simon Jarvis and Tom Roseingrave. A Whistledown Production for the BBC World Service.