Nigeria - Buhari's second term in office.

Nigerian President Muhammadu Buhari has been sworn in for a second term at what many called a low-key inauguration ceremony in which he surprised many by not delivering a speech. The 76-year-old former military leader faces a long list of challenges which include a sluggish economy, high unemployment and a decade-old Islamic insurgency. His four-year first term, in which he rarely gave public addresses, was overshadowed by speculation about his health and marked by a long absence abroad for medical treatment. But he won a clear endorsement in February’s election with 56% of the vote. • Dr Akinola Olojo: Senior Researcher: Transitional Threats & International Crime Institute of Security Studies (ISS).• Dr Jimam Lar : Political Analyst.• Dr Olayinka Ajala: Associate Lecturer University of York.