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A booklet with Kofi Annan on the cover is seen during 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)
A booklet with Kofi Annan on the cover is seen during 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)