25% seems very generous for Obama. He's been very pro-intelligence community from inauguration until now (at least that we know of). But I'd agree he's definitely the only potential hope.
> I think Trump is in favour of Snowden being executed, isn't he?
I'm not sure but I can imagine him saying that at some point. Still, I'd put him at non-zero because he doesn't have the same political baggage that Clinton would worry about.
The cynic in me is happy Snowden is in Russia and not in Yemen, Obama would probably just sanction a drone strike and take him out otherwise. Fortunately for Snowden, not all collateral damage is create (with) equal (access to a nuclear arsenal).
Yep. I'd put it as zero with Clinton, non-zero but statistically insignificant with Trump, and 25% with Obama.