Roger StoneRoger Jason StoneRoger Stone served with Capitol riot lawsuit during radio interview Lawyer for 17 Jan. 6 defendants says he's been released from hospital Democrats' Jan. 6 subpoena-palooza sets dangerous precedent MORE said Monday that he may be willing to cooperate with special counsel Robert MuellerRobert (Bob) MuellerSenate Democrats urge Garland not to fight court order to release Trump obstruction memo Why a special counsel is guaranteed if Biden chooses Yates, Cuomo or Jones as AG Barr taps attorney investigating Russia probe origins as special counsel MORE, but vowed he would never testify against President TrumpDonald TrumpCapitol fencing starts coming down after 'Justice for J6' rally Netanyahu suggests Biden fell asleep in meeting with Israeli PM Aides try to keep Biden away from unscripted events or long interviews, book claims MORE.
"There is no circumstance in which I intend to be pressured in order to testify against the president. First of all, I have nothing that I could say about him that would be negative. Secondarily, I'm just not going to do that," Stone said during an appearance on CNN's "OutFront."
"I wouldn't rule out cooperating with the special counsel if I can be helpful in some area, but there's no circumstance under which I would testify against the president," he added.
Speculation has grown that Mueller has narrowed his focus on Stone as a possible criminal target in recent weeks. Stone has not yet been called to interview with Mueller or testify before the grand jury, but the special counsel has in recent weeks sought testimony from a growing number of individuals linked to the longtime Trump adviser.
Stone has long been the subject of public scrutiny because of his connections to WikiLeaks and Guccifer 2.0, the hacking persona that Mueller’s team now alleges was a front for Russian intelligence officers.
Asked Monday if he believes he will be indicted or called to testify by Mueller, Stone said he has "no idea."
"Look, the process is going to take its course," Stone said, before explaining that his legal costs related to the Russia investigation and "nuisance harassment lawsuits" are projected to hit $2 million.
Stone denied any involvement in Russian collusion, and suggested he's only a target because the Mueller probe is a "politically motivated" investigation.
He penned an opinion piece for The Daily Caller on Monday in which he accused the special counsel of violating his constitutional rights.
"It is now clear Mueller may seek to conjure up some bogus legal offense against me in an effort to force me to testify against the President, who I have known for forty years," Stone wrote. "Additionally, they seek to silence me now and, during their coming assault, to impeach the President."
His rhetoric echoes that of Trump, who frequently derides the Mueller investigation as a "witch hunt" that has overlooked wrongdoing by Democrats.
Mueller has thus far obtained the indictments or guilty pleas of roughly 30 individuals, including four former Trump associates.
Former Trump campaign chairman Paul ManafortPaul John ManafortDOJ investigating one-time Trump campaign adviser over alleged ties to Qatar: report Foreign lobbyists donated over M during 2020 election: report Former Mueller prosecutor representing Donoghue in congressional probes: report MORE is on trial in Virginia in the first major courtroom test for Mueller's team.
Updated at 9:40 p.m.