Glenn Greenwald said in an interview Tuesday that the Obama administration is engaged in an "unprecedented war on whistleblowers."

Greenwald, the Guardian reporter who has worked with leaker Edward Snowden to reveal previously secret federal surveillance programs, said on Fox News Channel that the Obama Administration wants to attack Snowden to send a message to future potential whistleblowers.

"I think what the Obama administration wants and has been trying to establish for the last five years now with the unprecedented war on whistleblowers that it is waging is to make it so that everybody is petrified of coming forward with information about what our political officials are doing in the dark that is deceitful, illegal or corrupt," Greenwald said.

Greenwald added: "They don’t care about Edward Snowden at this point. He can no longer do anything that he hasn’t already done. What they care about is making an extremely negative example out of him to intimidate future whistleblowers from coming forward, because they’ll think that they’re going to end up like him. That’s their objective.”