NEW YORK, NY - SEPTEMBER 24: U.S. President Barack Obama speaks at the 69th United Nations General Assembly at United Nations Headquarters on September 24, 2014 in New York City. The annual event brings political leaders from around the globe together to report on issues meet and look for solutions. This year's General Assembly has highlighted the problem of global warming and how countries need to strive to reduce greenhouse gas emissions. (Photo by Andrew Burton/Getty Images)
