Tomorrow is #MandelaDay, so for #tbt we bring you a photo of the South African leader in 1993 enjoying a lighthearted moment with Rick Stengel, who is now @StateDept’s Undersecretary for Public Diplomacy and Public Affairs. Undersecretary Stengel wrote Long Walk to Freedom with #Mandela, as well as two other volumes about #SouthAfrica. For more information on Mandela Day, visit MandelaDay.com. #throwbackthursday