World Watches as Obama and Castro Cross Paths in Panama

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U.S. President Barack Obama (L) shakes hands with Cuban President Raul Castro during the official memorial service for former South African President Nelson Mandela at FNB Stadium December 10, 2013.
( Chip Somodevilla / Getty )
Produced by Mythili Rao
Hosted by Todd Zwillich
PRI WNYC