"The Trump campaign knew in advance about WikiLeaks' plans."

And this is where the criminal indictments should begin.  

Trump certainly knew what was going on, clued in by his friend Vlad.  But Vlad, being the good KGB agent that he was, has recorded proof that Trump knows.  So now Vlad can reveal that to Trump, extorting him - "do as I tell you or I release this to the media and you go to prison".  Our country is so screwed.