But it could be anyone! China! Or a 400 lb kid living with his parents. /s
What Iraq and those WMDs? Or Iran that has been just a few months away from getting Nukes for like 20 years. Or nearly all the 9/11 hijackers were from Saudi Arabia, but apparently they are our friends.
Foreign policy continues to reveal events that occur not as they were originally described.
The real question "Are we certain enough to take actions that could lead to war?" because that is where are government is going with this. http://www.pbs.org/newshour/rundown/does-government-know-hac...
Why do you think so? First of all, there are countless "enemies" that would want to hack the US/DNC (North Korea comes to mind, who was accused of hacking Sony some time ago, as does Iran, who was itself victim of US hacking). All of those seem equally likely. Second, it's possible that there was a leak, not a hack.