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Cameroonian President Paul Biya addresses the General Debate of the 72nd session of the United Nations General Assembly at the UN headquarters in New York, on Sept. 22, 2017. (Xinhua/Wang Ying)

Cameroonian President Paul Biya addresses the General Debate of the 72nd session of the United Nations General Assembly at the UN headquarters in New York, on Sept. 22, 2017. (Xinhua/Wang Ying)