Here is a well produced oxford style debate between qualified debaters on the topic. I found it very enlightening and hope everyone gives it a listen. It's available as a video or podcast. http://www.intelligencesquaredus.org/debates/snowden-was-jus...
Thank you for posting this great debate video. Although it did not change my opinion on the pardon, I now have a more nuanced view on this matter. I thought all the debaters in this video had good points, but I still agree with the opposition.