The Kennedy Center for the Performing Arts Washington, D.C. 10:17 A.M. EDT MS. ROBERTS:  Well, I am so excited that we get to do this again. MRS. BUSH:  We did this last summer in Dar es Salaam.   MS. ROBERTS: …

State Department Washington, D.C. 6:14 P.M. EDT PRESIDENT OBAMA:  As I think everyone knows by now, this first U.S.-Africa Leaders Summit has been the largest gathering we’ve ever hosted with African heads of state and government — and that includes…