Comment: Based on the hacking of the DNC, etc. by SOMEONE with an agenda, the question is not IF they've also got something on Trump, but WHAT. They're just holding on to it for a more opportune time. How hard would it be to hack into his legal activity, his financial activity, his "social" activity, his emails outlining his shady business practices. It's all spread all over in a variety of private hands.

Blackmail central, baby: "Dear Mr. President. We're going to annex the rest of the Ukraine and you won't say a thing unless you want your financial records and these two videos of you doing you-know-what released to the public." Easy decision for someone of his morals.