Edward Snowden, the former NSA employee turned whistleblower, says that there are still huge revelations regarding the over reach of government surveillance that would have far reaching ramifications.

In an interview with fellow whistleblower James Bamford, appearing in Wired, Snowden spoke of the volume of documents he has in his possession, revealing that there are so many that he hasn't yet been able to read all of them.

Snowden says that he doesn't have any where near the 1.7 million documents the government claims he does, yet admits that there is a significant amount of information yet to be made public.

"I think they think there's a smoking gun in there that would be the death of them all politically," he tells the tech magazine, as he appears on this month's cover wrapped in a US flag.