Russia's Wagner Group leaves Mali

Russia says the paramilitary group Wagner has accomplished its mission and has left Mali, although a Russian presence remains in the West African country, through the Africa Corps. So what did the Wagner Group achieve?Why has a separatist movement on the tiny, remote island of Annobón that is part of Equatorial Guinea, appealed to Argentina for support with its independence claim?And new research shows that Africa now has more Christians than any other continent, surpassing Europe for the first time. We discuss what is driving that growth.Presenter: Audrey Brown Producers: Tom Kavanagh, Alfonso Daniels, Nyasha Michelle, Victor Sylver and Joseph Keen Technical Producer: Craig Kingham Senior Producer: Patricia Whitehorne Editors: Alice Muthengi and Andre Lombard