World leaders gathered to remember Nelson Mandela this week. But critics say there were some major social blunders made by President Obama, like taking ‘selfies’ and shaking hands with Cuban leader Raul Castro. Host Michel Martin asks Dorothea Johnson of The Protocol School of Washington, about head of state etiquette.
Article source: http://www.npr.org/templates/story/story.php?storyId=250468525&ft=1&f=1001