U.S. Secretary of State John Kerry waves goodbye as he leaves Cairo, Egypt en route to Riyadh, Saudi Arabia on Sunday, March 3, 2013. Kerry met with Egypt's president Sunday, wrapping up a visit to the deeply divided country with an appeal for unity and reform. The U.S. is deeply concerned that continued instability in Egypt will have broader consequences in a region already rocked by unrest. (AP Photo/Jacquelyn Martin, Pool) less