Equatorial Guinea's Second Vice-President Teodoro Nguema Obiang Mangue addresses a plenary meeting of the United Nations Sustainable Development Summit 2015 at the United Nations headquarters in Manhattan, New York September 26, 2015. More than 150 world leaders are expected to attend the three day summit to formally adopt an ambitious new sustainable development agenda, according to a U.N. press statement. REUTERS/Darren Ornitz