Why are two million children in northern Nigeria suffering from severe malnutrition?

Millions of children in northern Nigeria are without sufficient food, that's according to the aid agency, MSF. The persistent malnutrition crisis in the region, MSF says, stems from inflation, security issues and insufficient healthcare infrastructure. We'll hear from Dr Simba Tirima in Maiduguri.Also its almost 10 years since so-called Islamic State declared a caliphate. What's been their influence in Africa?And the growing interest of Formula 1 on the continent. Any chance of an African Grand Prix? Presenter: Charles Gitonga Producers: Bella Hassan, Rob Wilson, Emmanuela Alausa and Yvette Twagiramariya Senior Journalist: Karnie Sharp Technical Producer: Jonathan Greer Editors: Andre Lombard and Alice Muthengi