St. Petersburg "troll farm"

Mueller indicts some Russians; clears Trump campaign of collusion (detailed analysis of latest indictment)

A recurring pattern of the Russiagate investigation is that whenever pressure increases on the FBI and on Special Counsel Mueller an indictment appears.
This happened in October when following the FBI’s admission that the Trump Dossier – the keystone in the “evidence” of collusion between the Trump campaign and Russia – could not be verified and the Wall Street Journal called for Special Counsel Mueller to resign, indictments against Paul Manafort, Rick Gates and George Papadopoulos appeared.