Calling on countries to overhaul global trade rules, Ngozi Okonjo-Iweala said: "The world order and multilateral system we used to know has irrevocably changed. We will not get it back ... We must look to the future." YAOUNDE: The World Trade Organization (WTO) chief called on countries on Thursday (Mar 26) to overhaul global trade rules, telling them the old world order had gone for good, following a year of turmoil sparked by US tariffs and wider geopolitical tensions. Ngozi Okonjo-Iweala set