Ethiopian troops march on the Tigrayan capital Mekelle as the country's war on the well-armed region continues. The UN is warning of a "full-scale humanitarian crisis". Also, the north and east of Burkina Faso have been heavily hit by terror attacks since 2015. The one million people forced from their homes will find it difficult to vote in Sunday's presidential election. Plus, Central African pygmies' traditional music and dance style continues to draw crowds. The name translates as the dance of the caterpillars and its rhythms and sounds have been passed down through the generations.
