ITU Secretary-General Zhao Houlin speaks during the summit with the theme of "Enabling the positive use of Artificial Intelligence for All" held in Geneva, Switzerland, May 17, 2018. On the occasion of World Telecommunication and Information Society Day (WTISD), the United Nations on Thursday called for focus on the potential of artificial intelligence (AI) to accelerate the UN Sustainable Development Goals (SDGs). (Xinhua/Xu Jinquan)