Malala Yousafzai delivers a speech after she was designated as the United Nations Messenger of Peace with a special focus on girls' education at the UN headquarters in New York, on April 10, 2017. UN Secretary-General Antonio Guterres on Monday designated 19-year-old Malala Yousafzai from Pakistan as the UN's youngest Messenger of Peace with a special focus on girls' education. (Xinhua/Li Muzi)