Paul Manafort, former chairman of the Trump campaign, is appearing in court this week as part of the first trial in the special counsel Robert Mueller's investigation into Russian interference in the 2016 US presidential election.
Since taking over the investigation last May, Mueller's team has charged four Americans once affiliated with Trump's campaign or administration, 13 Russian nationals, 12 Russian intelligence officers, three Russian companies, and two other people.
Here's everyone who's been charged in the Mueller probe so far: Paul Manafort, former Trump campaign chairman
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Former Trump campaign chairman Paul Manafort surrendered to federal authorities on October 30, 2017, after he was indicted, along with his business associate Rick Gates, on 12 counts, including conspiracy against the US and money laundering.
Manafort, who pleaded not guilty, had been a key figure in Mueller's investigation.
He was forced to step down as Trump's campaign chairman in May 2016 after coming under fire for his connections to Russian oligarchs and his past lobbying efforts abroad.
Manafort was also associated with at least 15 bank accounts and 10 companies in Cyprus, dating back to 2007, NBC News reported in March, and the FBI has issued grand-jury subpoenas to several banks for Manafort's records.
To date, Manafort stands charged with 18 counts related to tax fraud, bank fraud, money laundering, failure to register as a foreign agent, and obstruction of justice.
The indictment says Manafort committed many of those crimes while working as an unregistered lobbyist in the US for the Ukrainian government and pro-Russia interests beginning in 2006.
His trial in the Eastern District of Virginia began on Tuesday.
Rick Gates, one of Manafort's business partners
 Evan Vucci/AP
In October 2017, Gates was indicted along with Manafort on 12 counts, including conspiracy against the US, making false statements, and failing to file reports of foreign bank and financial accounts. He at first pleaded not guilty on all counts.
Gates joined Trump election efforts in the spring of 2016, working as Manafort's deputy. He traveled with Trump and grew close with many top campaign officials.
After Manafort was ousted as Trump's campaign chief in August 2016, Gates continued working on behalf of the soon-to-be president, helping fundraise $25 million for the pro-Trump nonprofit America First Policies and working on Trump's inaugural committee. As Mueller's probe intensified in the early months of the Trump administration, Gates left the nonprofit altogether.
But as recently as June 2017, The Daily Beast reported that Gates was still visiting the White House and working under Tom Barrack, who has remained one of Trump's most trusted advisers.
Gates opted to take a plea deal in late February, pleading guilty to one charge of lying to investigators and one charge of conspiracy in exchange for becoming a cooperating witness in the Mueller probe. He will be testifying against Manafort as the prosecution's star witness in its case in Virginia.
George Papadopoulos, a former Trump campaign adviser
 Trump Campaign
On the same day Mueller's office announced the indictments of Manafort and Gates, it was revealed that George Papadopoulos, a 30-year-old former Trump adviser, had pleaded guilty to lying to the FBI about his contacts with Russia.
According to documents that were unsealed by the Mueller investigation, Papadopoulos had made at least six attempts to set up a meeting between the Trump campaign and Russian representatives throughout the course of the 2016 presidential campaign, using a London-based professor named Joseph Mifsud and a female Russian national as conduits.
He was arrested October 5, 2017, and subsequently cooperated with Mueller's team.
Trump has described Papadopoulos as a low-level volunteer.
"Few people knew the young, low level volunteer named George, who has already proven to be a liar," Trump tweeted following news of the guilty plea. "Check the DEMS!"
See the rest of the story at Business InsiderSee Also: SEE ALSO: Meet Robert Mueller, the former FBI director and tenacious investigator leading the Trump-Russia probe
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