Guinea-Bissau: General sworn in after coup

A military general has been sworn in as Guinea-Bissau's transitional president following the 15th coup in the country. Why is the country prone to coups?BBC speaks to families of missing students in Niger state as Nigeria declares a state of emergency following a surge in kidnappings.And we look at what could be the reasons behind America’s move to exclude South Africa from the African Growth and Opportunity Act.Presenter: Nyasha Michelle Producers: Joseph Keen, Sunita Nahar, Elphas Lagat in London Technical Producer: Pat Sissons Senior Producer: Yvette Twagiramariya Editors: Alice Muthengi and Andre Lombard