New Zealand's Prime Minister Jacinda Ardern addresses the General Debate of the 74th session of the UN General Assembly at the UN headquarters in New York, Sept. 24, 2019. World leaders attending the ongoing General Debate of the 74th session of the United Nations General Assembly (UNGA 74) on Tuesday voiced strong support for multilateralism and called for international cooperation to tackle common threats and challenges together. (Xinhua/Li Muzi)