Danny Glover, American actor and United Nations Children's Fund (UNICEF) Goodwill Ambassador, speaks during a ceremony marking Nelson Mandela International Day at the UN headquarters in New York, on July 18, 2017. Marking Nelson Mandela International Day, UN Secretary-General Antonio Guterres on Tuesday called for actions across the world in promoting peace, sustainable development and lives of dignity for all. (Xinhua/Li Muzi)