It's hard to snub without looking graceless.
The handshake between President Obama and Cuban leader Raul Castro at Nelson Mandela’s funeral has, by now, been interpreted as everything from a symbol of warming relations to evidence of Obama’s inner-communist. But the greeting was probably less about politics, and more about simply being polite: At the memorial service for a revered world leader, Obama ascended the stairs. And there was Castro.
Read this article by Jennifer Kirby at newrepublic.com