Mr Stone, who was arrested earlier this year, is charged with witness tampering, obstructing justice and lying to congressional investigators.
In a text message to Randy Credico, a radio host, Mr Stone wrote: “You are a rat.
The second whistleblower has not yet filed their own complaint, but does not need to to be considered an official whistleblower.
In a series of eccentric TV appearances he has claimed that the US state department asked him to get involved.
However, Trump announced that Pence had had “one or two” phone conversations of a similar nature, dragging him into the crisis.
In fact, the radio host’s interview with Mr Assange occurred a month after the timeline Mr Stone provided to investigators.
Of the seven counts Mr Stone faces, witness tampering carries the highest potential prison sentence at a maximum of 20 years. »