"The whistle-blower himself says he has always been incredibly careful about what exactly he discloses, and to whom. “I carefully evaluated every single documen

"The whistle-blower himself says he has always been incredibly careful about what exactly he discloses, and to whom. “I carefully evaluated every single document I disclosed to ensure that each was legitimately in the public interest,” Snowden told the Guardian. “There are all sorts of documents that would have made a big impact that I didn’t turn over.”"