1. Exposed the tools and techniques of domestic surveillance. 2. Exposed the tools and techniques of foreign surveillance.
The idea of not prosecuting Snowden seems to focus on the commendable exposure of the full extent of the domestic program.
I just don't see how one can ignore his exposure of the perfectly legal foreign intelligence gathering.
I mean, in an ideal world we wouldn't have spies... But we also wouldn't have police or military.
It's not at odds with the dismissal of the Nuremburg defense because it was a violation of the international law. I do have to admit that is sort of a cop out since international law at the time was more moral than real law.
Another huge distinction is that nobody was charged at Nuremburg for not exposing the crimes, they were charged with aiding them. If Snowden had a moral issue spying on people, he could quit.
Also at Nuremburg, we were just punishing the losers of a war.