Amb. Susan Rice, U.S. Permanent Representative to the United Nations delivers remarks in the Rose Garden

Amb. Susan Rice, U.S. Permanent Representative to the United Nations delivers remarks in the Rose Garden of the White House, June 5, 2013. President Barack Obama announced that Amb. Rice will succeed National Security Advisor Tom Donilon, and Samantha Power, former Senior Director for Multilateral Affairs and Human Rights, as the nominee to succeed Rice.