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Former United Nations Secretary-General Ban Ki-moon (2nd L) attends a memorial tribute to Kofi Annan, the 7th Secretary-General of the United Nations, at the UN headquarters in New York, on Sept. 21, 2018. (Xinhua/Li Muzi)?
Former United Nations Secretary-General Ban Ki-moon (2nd L) attends a memorial tribute to Kofi Annan, the 7th Secretary-General of the United Nations, at the UN headquarters in New York, on Sept. 21, 2018. (Xinhua/Li Muzi)?