David Nabarro, UN Special Adviser on 2030 Agenda for Sustainable Development, addresses the media in the headquarters of World Health Organization (WHO) in Geneva, Switzerland, Jan. 26, 2017. The WHO Executive Board selected 3 nominees, Pakistani candidate Sania Nishtar, Ethiopian candidate Tedros Adhanom Ghebreyesus and British candidate David Nabarro, for the post of WHO Director-General on Wednesday. (Xinhua/Xu Jinquan)