BANFIELD: Comedian John Oliver loves to crack jokes. But in an interview that "Any real journalist would kill for" the NSA leaker, Edward Snowden, that guy was not laughing. On HBO's Last Week Tonight, John Oliver not only grilled Snowden about the vast reserves of U.S. government secrets he exposed, but check this out.</s>JOHN OLIVER, HOST, HBO'S LAST WEEK TONIGHT: How many of those documents have you actually read?</s>EDWARD SNOWDEN, NSA LEAKER: I have evaluated all the documents there in the archive.</s>OLIVER: You've read every single one?</s>SNOWDEN: Well, I do understand what I turn over.</s>OLIVER: The difference between understanding what's in the document and reading what's in the document?</s>SNOWDEN: I recognize the concern.</s>OLIVER: When you're handing over thousands of NSA documents, the last thing you want to do is read them. So the New York Times took a slide, didn't redact it properly and in the end it was possible for people to see that something was being used in Mosul on Al-Qaeda.</s>SNOWDEN: That is a problem.</s>OLIVER: Well, that's a -- up.</s>BANFIELD: And that is something we are not allowed to say on this channel. Oliver did eventually lighten up they're demonstrating how little Americans actually do know about Edward Snowden. Thanks for watching everybody. WOLF starts right now.
John Oliver Grills Edward Snowden.