Why has polio re-emerged in Angola?

Angola was certified as polio-free in 2015, but is now combatting a new outbreak of the disease after several cases were reported in a Western province. What has caused the virus to come back?A new report says Islamist militants are using Starlink technology to ramp up operational capabilities in Niger. And why are South Sudanese women fashion's favourites and are being sought after on the catwalk?Presenter: Audrey Brown Producers: Charles Gitonga in Nairobi. Yvette Twagiramariya, Bella Hassan and Alfonso Daniels in London Senior Producers: Patricia Whitehorne and Richard Kagoe Technical Producer: Jonathan Greer Editors: Andre Lombard and Alice Muthengi