Patricia Espinosa, executive secretary of UNFCCC, speaks at the opening of the joint High-Level Segment of the 22nd Conference of the Parties to the United Nations Framework Convention on Climate Change (COP22) and the 12th Conference of the Parties to the Kyoto Protocol (CMP12) in Marrakech, Morocco, on Nov 15, 2016. The joint High-Level Segment of COP22 and CMP12 opens here Tuesday. [Photo/Xinhua]