Edward Snowden's yet-unleaked leaks could be USA's 'worst nightmare,' says Glenn Greenwald

Glenn Greenwald, the Guardian journalist who was first to publish the documents that former NSA contractor Edward Snowden leaked about the US government's surveillance programs, gave an interview to the Argentinean daily La Nacion.
"Snowden has enough information to cause harm to the U.S. government in a single minute than any other person has ever had," he said from Rio de Janeiro, Brazil.
"The U.S. government should be on its knees every day begging that nothing happen to Snowden, because if something does happen to him, all the information will be revealed and it could be its worst nightmare."
A synopsis of the interview in English at Reuters.