
  President Barack Obama addresses the United Nations General Assembly in New York on Tuesday. Richard Drew/AP 
 President Obama addressed the United Nations General Assembly this  morning, his final speech before the international governing body. As he  nears the end of his two terms in office, the president spoke about  some of his administration's biggest foreign policy initiatives,  including the importance of the Paris climate accord, the nuclear deal  with Iran and fighting the Ebola epidemic in West Africa. He also talked  about the ongoing, multisided war in Syria. His speech comes the day  after a cease-fire brokered by the United States and Russia collapsed,  in part because of distrust sowed by an accidental strike by a U.S-led  coalition aircraft that killed Syrian soldiers over the weekend. And on  Monday, an aid convoy in Syria was attacked from the air.