Ivanka is now senior adviser to her father, US President Donald Trump, but previously worked within the Trump Organisation. According to 2019 book ‘Kushner Inc’, her part-time on-the-job tutor was Russian-born businessman Felix Sater. Mr Sater met Mr Trump in 2000 when he was working for development firm Bayrock Group and the future President apparently wanted to “keep him close”.
Mr Trump repeatedly asked him which of his children should run his company, to which Mr Sater would say Ivanka.
He told author Vicky Ward: “I thought she was the one who can run it best.
“She’s got the biggest set of balls in the room.”
That said, he did have some criticism of the woman now dubbed the First Daughter.
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He said whilst she was bright, she was volatile if she didn’t get her own way.
Mr Sater recalled: “There was a lot of yelling back and forth.
“She was a born promoter. Her appearance and her tenacity made Donald look at her and say ‘Wow. She knows how to get s*** for free and get her name on stuff.’”
However, it would eventually be Ivanka who was responsible for Mr Sater getting let go from the organisation.
Ms Ward wrote: “It was a seminal moment that demonstrated Ivanka had real influence over her father, that limit of which had not yet been found.”
Ivanka herself left the organisation in 2017 to work within her father’s new presidential administration, along with her husband Jared Kushner.
However, for a while Ivanka and Mr Sater worked closely together.
In 2006, the pair went to Moscow on a scouting trip and it was Mr Sater that begged Vladimir Putin’s security detail to let Ivanka sit on the President’s chair during a private tour of the Kremlin.
Mr Sater has a somewhat colourful background; he was the son of a small-time gangster who had done well and ended up a senior vice president at Bear Stearns.
However, after a drunken brawl he spent fifteen months in prison and proceeded to get involved in a $40million stock scam.
After pleading guilty in the racketeering case, he became an informant for the FBI and would go on to provide information that was “crucial to national security,” according to US Attorney General Loretta Lynch.
Mr Sater was working for the FBI at the time he met Mr Trump.