This all ties back to the efforts to use Deripaska to present Paul Manafort to the Trump campaign.
Deripaska has a direct subordinate whose ex wife is rather close friends with Ivanka. If you want to know why Ivanka reversed course on her decision to marry Kushner, my guess would be that threats of sanctioning her business were a powerful motivator.
Ivanka described her marriage to Kushner as "the best business decision" - which is an odd way for a woman to describe a marriage.
Guess who was managing Trump's campaign that got staffed with Paul Manafort, Carter Page and George Papadopoulous… However you spell papapotamus's name.
Run the history on these guys, and Manafort is just dirty - was running funds for Deripaska and would have been a valid FISA target. Carter Page was an informant for the FBI and CIA on Russian operations and was probably not fully aware of the plot to use him to spy on Trump. Probably. His status as an informant/operative was selectively hidden in order to use his actions as an informant as probable cause for the FISA warrant.
PapaD… PapaD is an anomaly - he pops up in the Carson campaign and then warps over to Trump's campaign with no referral between the two campaigns. IE - he was a spook planted specifically to trigger the nonsense regarding the diplomat.
This whole operation has been Wild Weasel combined with a danger close fire mission.