President Obama spoke by phone today with United Nations Secretary-General Ban Ki-moon to thank him for his leadership in achieving the historic climate agreement in Paris on December 12th. The Secretary-General emphasized the important leadership role that the United States played in achieving a successful agreement. The President and the Secretary-General underscored their commitment to work together to implement the agreement. The President and Secretary-General also discussed the deteriorating situation in Burundi and the urgent need to begin internationally-mediated dialogue.
Barack Obama, Readout of the President's Call With United Nations Secretary-General Ban Ki-moon Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/313387