I am pretty skeptical about the extent of direct Russian governmental involvement in the hacking of the DNC and Podesta's email account given the paucity of evidence. It would seem far more likely that Putin's regime turns a blind eye to certain activities either originating in or passing through their domain, as long as the target falls within certain parameters.
Don't get me wrong, I think a certain amount of firm resolve is due to be shown to Russia now and in the future, but I think there are many valid reasons for that without needing to invent them.