Why does Putin hate Hillary Clinton so much? On whether Russia aided Trump in the election, Director Comey in his testimony today said:

"That was a fairly easy judgement for the community. Putin hated Secretary Clinton so much that the flipside of that coin was he had a clear preference for the person running against the person he hated so much."

While this isn't surprising, it makes it look like Putin has an especially keen grudge against Clinton. What particular slights in the past are on Putin's mind when it comes to hating Clinton "so much?"