Vincent Makori reports on how the war to defeat Boko Haram in northern Nigeria rages on and how Nigerians are reacting to an audio clip released by Boko Haram, pledging its allegiance to the deadly Islamic State group. Reports on South Sudan conflict, African Union priorities, President Barack Obama speaking in Selma, Alabama for the 50th anniversary of Bloody Sunday. And, Sonny Young with a sports update. Watch the show Monday-Friday @ 1630 UTC/GMT. Visit VOAnews.com and visit us on Facebook.