US President Donald Trump's decision to freeze funding to the World Health Organization (WHO) amid the coronavirus pandemic is "deeply regrettable," Moussa Faki Mahamat, the chairman of the African Union Commission, said Wednesday. "Today more than ever, the world depends on WHO's leadership to steer the global #Covid_19 pandemic response. Our collective responsibility to ensure WHO can fully carry out its mandate, has never been more urgent," Faki said in a Twitter post. rcb/ri