The African Union also is stepping up the pressure on Juba. It's branded the fighting as “callous,” and says those responsible should face justice. CGTN's Girum Chala has this update.Subscribe to us on YouTube: http://ow.ly/Zvqj30aIsgYFollow us on:Facebook: https://www.facebook.com/cgtnafrica/Twitter: https://twitter.com/cgtnafrica