Obama will never pardon Snowden.
The popular perception of him is liberal, but he is in reality one of the most hawkish men in Washington. He sends Hellfire missiles like the rest of us send email.
Obama will never go against the security state. He is the progeniture of the security state.
His belief is that if we wish to avoid large-scale wars, then some people must silently disappear, or be quietly erased from the sky.
Is he wrong? I don't know. It may be lesser of many evils. President Obama is strategically brilliant. Is he going to condone someone who endangered his entire philosophy of national defense?
No way.