Chief among those still-unanswered questions is who exactly was in the meeting and what is the identity of the mysterious eighth person.
1. Donald Trump Jr.
The organizer of the meeting from the American side, Trump Jr. set things up in an email conversation with the British-born promoter and former journalist.
2. Jared Kushner
Married to Ivanka Trump and now a top aide and confidant of President Trump, Kushner is Trump's son-in-law, Trump Jr.'s brother-in-law and a key figure in the campaign. Another participant said Kushner was only present for approximately 10 minutes.
3. Paul Manafort
As Trump's campaign chairman, Manafort helped Trump land the Republican nomination. But as his ties to a pro-Russian Ukrainian political party began to become a diversion and as Trump flailed in the polls (he would later go on to outperform them) Manafort stayed on until August 19. He is part of the FBI's investigation into possible collusion between the campaign and Russians. Other participants in the June 2016 meeting said he was typing on his phone for most of the duration.
The middle man
4. Rob Goldstone
The meeting was set up by Trump Jr. during an email exchange with Rob Goldstone, a former journalist who was the publicist for an Azerbaijani-Russian pop star who performed at the Miss Universe pageant the Trumps hosted in Moscow in 2013. The pop star, Emin Agalarov is the son of Aras Agalarov, a billionaire real estate developer. The email exchange between Trump Jr. and Goldstone says it is at the behest of Emin who had information given to his father by someone Goldstone describes as a "Crown prosecutor." There appears to be no such thing as a "crown prosecutor" in Russia, but in Goldstone's native England that could refer to a government attorney. The offer is for "some official documents and information that would incriminate Hillary and her dealings with Russia and would be very useful to your father." Both Emin and Aras Agalaraov have denied wanting to pass along such information.
5. Natalia Veselnitskaya
6. Rinat Akhmetshin
Now a US citizen and registered lobbyist for Veselnitskaya's anti-Magintsky organization, he also spent two years in the Soviet military. He has been on the radar of lawmakers. In April, Sen. Chuck Grassley wrote a letter to Homeland Security secretary John Kelly requesting any government information on Akhmetshin and referring to him as "a Russian immigrant to the United States who has been accused of acting as an unregistered agent for Russian interests and apparently has ties to Russian intelligence."
7. Anatoli Samochornov
8. Agalarov associate
CNN reported July 14 that there was also an eighth person in the room, according to two sources familiar with the circumstances, although the name has not been disclosed. The person was described to CNN by a source as a representative of the Russian family, the Agalarovs, who had asked Goldstone to set up the meeting. While it isn't clear who the person is, a second source said he was an employee of the Agalarovs