Ethiopia's federal government announces it's taken a key town in Tigray as it continues its advance on the rebel region's capital. Meanwhile over 25,000 have reached Sudan after fleeing the violence. The conflict spilling over the border, into Eritrea. Over the weekend TPLF forces fired rockets into the Eritrean capital, accusing the country of siding with Ethiopia's federal government. And Burkina Faso prepares to head to the polls this Sunday. We'll bring you the first of a 4-part series on the challenges facing the nation and its 6 million inhabitants.