GUILTY: ROGER STONE

Convicted in November 2019 on seven counts including obstruction of justice, witness tampering, and lying to Congress about his communications with WikiLeaks. Sentenced to 40 months in prison.

Stone was a person of interest to Mueller's investigators long before his January 2019 indictment, thanks in part due to his public pronouncements as well as internal emails about his contacts with WikiLeks.

In campaign texts and emails, Stone communicated with associates about WikiLeaks following reports the organization had obtained a cache of Clinton-related emails.

According to the federal indictment, Stone gave 'false and misleading' testimony about his requests for information from WikiLeaks. He then pressured a witness, comedian Randy Credico, to take the Fifth Amendment rather than testify, and pressured him in a series of emails. Following a prolonged dispute over testimony, he called him a 'rat' and threatened to 'take that dog away from you', in reference to Credico's therapy dog, Bianca. Stone warned him: 'Let's get it on. Prepare to die.'

GUILTY: MICHAEL FLYNN

Pleaded guilty to making false statements in December 2017. Awaiting sentence

Flynn was President Trump's former National Security Advisor and Robert Mueller's most senior scalp to date. He previously served when he was a three star general as President Obama's director of the Defense Intelligence Agency but was fired.

He admitted to lying to special counsel investigators about his conversations with a Russian ambassador in December 2016. He has agreed to cooperate with the special counsel investigation.

GUILTY AND IN JAIL: MICHAEL COHEN

Pleaded guilty to eight counts including fraud and two campaign finance violations in August 2018. Pleaded guilty to further count of lying to Congress in November 2018. Sentenced to three years in prison and $2 million in fines and forfeitures in December 2018

Cohen was investigated by Mueller but the case was handed off to the Southern District of New York,leaving Manhattan's ferocious and fiercely independent federal prosecutors to run his case.

Cohen was Trump's longtime personal attorney, starting working for him and the Trump Organization in 2007. He is the longest-serving member of Trump's inner circle to be implicated by Mueller. Cohen professed unswerving devotion to Trump - and organized payments to silence two women who alleged they had sex with the-then candidate: porn star Stormy Daniels and Playboy model Karen McDougal. He admitted that payments to both women were felony campaign finance violations - and admitted that he acted at the 'direction' of 'Candidate-1': Donald Trump.

He also admitted tax fraud by lying about his income from loans he made, money from taxi medallions he owned, and other sources of income, at a cost to the Treasury of $1.3 million.

And he admitted lying to Congress in a rare use of the offense. The judge in his case let him report for prison on March 6 and recommended he serve it in a medium-security facility close to New York City.

GUILTY AND IN JAIL: PAUL MANAFORT

Found guilty of eight charges of bank and tax fraud in August 2018. Sentenced to 47 months in March 2019. Pleaded guilty to two further charges - witness tampering and conspiracy against the United States. Jailed for total of seven and a half years in two separate sentences. Additionally indicted for mortgage fraud by Manhattan District Attorney, using evidence previously presented by Mueller. That indictment was dismissed by the DA is appealing

Manafort worked for Trump's campaign from March 2016 and chaired it from June to August 2016, overseeing Trump being adopted as Republican candidate at the Republican National Convention in Cleveland. He is the most senior campaign official to be implicated by Mueller. Manafort was one of Washington D.C.'s longest-term and most influential lobbyists but in 2015, his money dried up and the next year he turned to Trump for help, offering to be his campaign chairman for free - in the hope of making more money afterwards. But Mueller unwound his previous finances and discovered years of tax and bank fraud as he coined in cash from pro-Russia political parties and oligarchs in Ukraine.

Manafort pleaded not guilty to 18 charges of tax and bank fraud but was convicted of eight counts in August 2018. The jury was deadlocked on the other 10 charges. A second trial on charges of failing to register as a foreign agent due in September did not happen when he pleaded guilty to conspiracy against the United States and witness tampering in a plea bargain. He was supposed to co-operate with Mueller but failed to.

Minutes after his second sentencing hearing in March 2019, he was indicted on 16 counts of fraud and conspiracy by the Manhattan District Attorney Cyrus Vance Jr., using evidence which included documents previously presented at his first federal trial. The president has no pardon power over charges by district and state attorneys.

GUILTY: RICK GATES

Pleaded guilty to conspiracy against the United States and making false statements in February 2018. Awaiting sentence

Gates, a Trump campaign official, was Manafort's former deputy at political consulting firm DMP International. He admitted to conspiring to defraud the U.S. government on financial activity, and to lying to investigators about a meeting Manafort had with a member of congress in 2013. As a result of his guilty plea and promise of cooperation, prosecutors vacated charges against Gates on bank fraud, bank fraud conspiracy, failure to disclose foreign bank accounts, filing false tax returns, helping prepare false tax filings, and falsely amending tax returns.

GUILTY AND JAILED: GEORGE PAPADOPOLOUS

Pleaded guilty to making false statements in October 2017. Sentenced to 14 days in September 2018, and reported to prison in November. Served 12 days and released on December 7, 2018

Papadopoulos was a member of Donald Trump's campaign foreign policy advisory committee. He admitted to lying to special counsel investigators about his contacts with London professor Josef Mifsud and Ivan Timofeev, the director of a Russian government-funded think tank.

He agreed to cooperate with the special counsel investigation but is now highly critical of it.