Re: There is no benefit to Mr. Snowden in returning to the heart of the beast
The only problem I had with your post is that you suggest that only the U.S. and Britain are interested in seeing Snowden locked away and shut up. I think that a sober assessment of what has actually gone on since Snowden's revelations is that basically all of NATO, the "5 Eyes" and probably other countries with strong relationships with the U.S. military and intelligence communities would be happy to see him locked up as well.
They might hide a little behind "Hey, it's the U.S. who is trying and imprisoning the guy!", but there are a lot of governments who benefit from being able to dial the Pentagon help line for this or that reason, and they would be happy to throw Snowden under the bus to ingratiate themselves with Washington DC.
Biting the hand that feeds IT
