Former South African ambassador to U.S. returns home after being declared persona non grata

Expelled South African ambassador to the U.S. speaks out after being declared persona non grata. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC ...