MILLS SOKO, Professor: International Business & Strategy, Wits Business School, University of the Witwatersrand MZUKISI QOBO, Head: Wits School of Governance, University of the Witwatersrand THE next director-general of the World Trade Organisation (WTO) will replace Brazilian Roberto de Azevedo, who has served since 2013 and plans to step down at the end of August, a year before the conclusion of his term. Of the eight candidates who have thrown their hats into the ring, three are from Africa. They are the former Nigerian finance minister Ngozi Okonjo-Iweala; the former Kenyan foreign minister Amina Mohamed, who also previously served as…