JOHANNESBURG (Reuters) - U.S. President Barack Obama shook the hand of Cuban President Raul Castro at a memorial to Nelson Mandela on Tuesday, an unprecedented gesture between the leaders of two nations which have been at loggerheads for more than half a century.
Castro smiled as Obama shook his hand on the way to the podium to make a speech at the commemoration for former South African President Mandela, one of the world's greatest peacemakers who died on Thursday.
