Barack Obama, Susan Rice, Tom Donilon, Samantha Power


President Barack Obama, second from left, walks with with United Nations Ambassdor Susan Rice, third from left, his choice to be his next National Security Adviser, current National Security Adviser Tom Donilon, left, and Samantha Power, his nominee to be the next United Nations Ambassador, in the Rose Garden of the White House on Wednesday, June 5, 2013, in Washington. (AP Photo/Evan Vucci)