Admittedly I haven't been following this extremely closely, nor do I want to come off as an apologist, but has the Obama administration released, well, any evidence of that Russians were behind this? Or is it all being claimed secret in the interest of national security?
No he hasn't. It's all disinformation to deligitmize the incoming president.
It's like everyone has forgotten that Obama was given the Nobel peace prize and yet here he is beating the drums of war with no public evidence. So far the only thing we know is that there was human failure which allowed a phishing attack to work against a non-government system. That's not hacking, that's just a dumb mistake. This alleged "Russian hack" causing the loss of Hillary does not explain how Democrats were overturned at all levels, not just the president.
This is a passive aggressive action to destabilize the world politics for an incoming administration. Yet Trump was accused of lacking the temperament to be president.
