UN Secretary-General Ban Ki-moon (R) poses for pictures with American actor Leonardo DiCaprio during a ceremony for his designation as UN Messenger of Peace at the UN headquarters in New York, on Sept. 20, 2014. As a UN Messenger of Peace with a special focus on climate change, Mr. DiCaprio will address the UN Climate Summit on Sept. 23 in New York. (Xinhua/Niu Xiaolei) |
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