Over 150 leaders from around the world are in New York to participate in the U.N.'s 70th general assembly and its sustainable development summit. Venezuelan president Nicolas Maduro said he spoke briefly with president Juan Manuel Santos to congratulate him on the historic agreement on justice for victims signed by the FARC and the colombian government in Havana. The parents of the 43 missing Ayotzinapa students expressed anger and outrage at president Enrique Peña Nieto after they met for the second time. Pope Francis made history by being the pontiff to ever address the US congress. US president Barack Obama and his chinese counterpart Xi Jinping will announce a major deal to jointly combat climate change.