Obama Shakes Raul Castro's Hand at Mandela Memorial

U.S.-Cuba relations far from ideal

As President Obama made his way through a crowd of 90 other world leaders in Johannesburg on Tuesday, he shook a surprising hand: that of Cuban President Raul Castro.

Video cameras caught the handshake, which came as Obama reached out to dozens of other leaders during the song that preceded his eulogy of Mandela.

Undoubtedly in part an effort to be polite, the handshake also comes not long after Obama indicated a desire to update U.S. policies toward Cuba.