Edward Snowden, the former National Security Agency (NSA) contractor who exposed the US Government's secret phone and internet surveillance programmes, said the US "is not going be able to cover this up".
Speaking during a live chat on the Guardian website, Snowden said: "All I can say right now is the US Government is not going to be able to cover this up by jailing or murdering me. The truth is coming, and it cannot be stopped".
He said that by openly declaring him guilty of treason, the US Government had "destroyed" any possibility of a fair trial in the United States.
"The US Government, just as they did with other whistleblowers, immediately and predictably destroyed any possibility of a fair trial at home, openly declaring me guilty of treason and that the disclosure of secret, criminal and even unconstitutional acts is an unforgivable crime", he wrote.
"That is not justice ... I did not reveal any US operations against legitimate military targets," Snowden continued. "I pointed out where the NSA has hacked civilian infrastructure such as universities, hospitals and private businesses because it is dangerous".