A portrait of former United Nations Secretary-General Javier Perez de Cuellar is pictured at the UN headquarters in New York, on March 5, 2020. UN Secretary-General Antonio Guterres on Wednesday night expressed sorrow at the death of Javier Perez de Cuellar, who served as the head of the world body from 1982 to 1991. (Xinhua/Li Muzi)
