UNITED NATIONS, June 7, 2016 (Xinhua) -- Mogens Lykketoft, President of the 70th session of the United Nations General Assembly chairs an informal dialogue for the position of the next Secretary-General, at the United Nations headquarters in New York, June 7, 2016. The United Nations on Tuesday kicked off a second round of public audition with another two new candidates for the position of next UN secretary-general. (Xinhua/Li Muzi)