After Russo-American relations soured, the American Justice Department and the F.B.I. came up with the idea of roping-in some Russian “oligarchs” with tight links to Vladimir Putin as sources of information. Oleg Deripaska is one such “oligarch.” He is suspected by the United States government of involvement in extortion, bribery, and possibly murder. From 2014 to 2016, the Justice Department and the F.B.I. hoped to turn him into an informer on Putin and on Russian organized crime. At first, they were interested in Russian organized crime and its possible connections to Putin; later they added an interest in possible connections between the Russians and Donald Trump’s presidential campaign. So the Americans offered Deripaska help in getting visas to the United States for business purposes.
Bruce Ohr, who had led Department of Justice campaigns against Russian organized crime, and Christopher Steele, the former head of the Russian desk at the British Secret Intelligence Service (MI-6), played roles in this effort. Steele’s role was to serve as an intermediary between the Americans and Russians. While the contacts between Ohr and Steele focused largely on the Deripaska case [and the other oligarchs?], they also discussed Steele’s “dossier” during the final months of the 2016 presidential campaign.
On 16 June 2015, Donald Trump announced his candidacy for president.
In July 2016, the F.B.I. began investigating possible contact between members of the Trump presidential campaign and Russians. Paul Manafort left the Trump campaign in August 2016 after reports surfaced that he had worked for pro-Russians in Ukrainian politics.
The Americans contacted Deripaska in September 2015 and again in September 2016.
In September 2015, the Americans pitched their theories of Kremlin-organized crime links to Deripaska. He rejected the theories, declined to help them with their inquiries, and quickly informed the Kremlin of the approach.
From mid-summer 2016, the American intelligence had become concerned over the Russian hack of the Democratic National committee’s e-mail and by reports of Russian contact with Trump campaign staff. In late Summer 2016, Steel began briefing American intelligence officials on his findings.
In September 2016, the Americans over-rode Deripaska’s refusal to hold a second meeting by showing up at his apartment or hotel in New York. This time, they wanted to explore their theory of Trump campaign collusion with Russia. In particular, they wanted to know if Paul Manafort had provided a connection between the Russians and the campaign. Again, Deripaska derided the theories as “preposterous” and doubted that any Trump-Russia connection existed.
With this avenue closed, Steele continued to share his information with American officials and journalists, both before and after the election.
 Kenneth Vogel and Matthew Rosenberg, “U.S. Agents Tried to Turn Oligarch into an Informer,” New York Times, 2 September 2018. Presumably they also assured him that they wouldn’t let word leak to Putin or the “vory” that he was helping a foreign state. What with their impulse-control issues and all.
 After retiring from MI-6, Steele had started a private business intelligence company. Among his clients was one of Deripaska’s lawyer. So, was that, perhaps, how the approach was made?
 The anonymous sources leak to the NYT apparently did not include a report on the response of the other oligarchs.