Sodiam also awarded him a €5m success fee for brokering the deal, so he didn't have to use any of his own money.The documents reveal how Sodiam borrowed all the cash from a private bank in which Ms Dos Santos is the biggest shareholder.Sodiam has to pay 9% interest and the loan was guaranteed by a presidential decree from her father, so the bank cannot lose out.By the time Sodiam pays off the loans, it will have lost more than $200m, the firm's chief executive told Panorama.The Angolan government says the diamonds were sold at a knockdown price and sources told Panorama that almost $1bn might have been lost.Mr Dokolo's lawyers say he later invested $115m in De Grisogono and his company paid above the market rate for the raw diamonds.When João Lourenço took over as Angola's president in September 2017 he moved swiftly against the former first family, sacking Ms Dos Santos from Sonangol.According to International Consortium of Investigative Journalists, it was at this time Sodiam sought to sell its stake in De Grisogono.But no buyer could be found for the luxury brand, known for hosting parties at the Cannes Film Festival.If the Swiss authorities accept any bid for bankruptcy by De Grisogono the firm says 65 employees will lose their jobs.It was founded in the 1990s by Fawaz Gruosi, who made the brand famous with his bold and ornate designs.The BBC is not responsible for the content of external Internet sitesMr Obama depicts his successor as lazy and incompetent. A “Without the assistance of these people, these corruption schemes and the money laundering that flows from that would be unable to happen,” Ben Cowdock, one of the researchers who worked on the report, told ICIJ.Some EU countries have tried to crack down. De Grisogono named Boston Consulting project leader John Leitão CEO in 2013 and Elmar Wiederin, who had been Boston Consulting’s main liaison to the jewelry company, chairman in 2015.In an interview with ICIJ partners at The New York Times, Leitão characterized Boston Consulting’s role at the jewelry company as “shadow management.” (Boston Consulting disputes this and said the firm worked only on three specific projects. Both were responding to concerns about the company’s shareholders, including Sonangol, which is the Angolan state oil company, and Exem Energy BV, a company owned by Dokolo, documents show. There are no proceeds from contracts or public contracts, or money that has been deviated from public funds,” she said.Dos Santos was scheduled to attend the 2020 World Economic Forum meeting in Davos, Switzerland, after Unitel, a mobile phone company she partly owns, was named an associate partner in 2019. Angola's Isabel dos Santos: Africa's richest woman eyes presidency Dos Santos: Whistleblower named a Football Leaks author These companies bought up assets, such as high-priced real estate in London and Lisbon, and purchased stakes in other businesses, including the jewelry company de Grisogono.Consultants, accountants and lawyers provided vital support at each step of the way, according to ICIJ’s examination of the From storefront offices in the tiny tax haven of Malta to conference rooms in Switzerland and Angola, Boston Consulting, PwC (formerly PricewaterhouseCoopers), KPMG and other major firms helped sustain the dos Santos empire for years. The American Institute of Certified Public Accountants, the world’s largest association of CPAs, has issued guidelines directing members to vet clients, but there is no evidence that U.S. accountants on the whole “make any more enquiries about customers than is absolutely necessary,” according to the Financial Action Task Force (FATF), an anti-money-laundering organization of 37 member countries.The top accounting regulator in the U.S., the Public Company Accounting Oversight Board, a nonprofit established by Congress in 2002, has authority to oversee audits of publicly traded  U.S. companies. Dokolo also received a roughly $4 million “success fee,” drawn from the Angolan state money, for arranging the deal that left him in charge.The transaction worked like this: Sodiam and a Dokolo-owned shell, Records indicate that Sodiam, then under the influence of dos Santos’ father, initially supplied $45 million to buy off de Grisogono’s debt and acquire shares in the struggling jewelry company. “To grow the business, you make a lot of noise,” he said. “Where we suspect criminal behaviour, we take appropriate action,” the code reads.Rodrigues and other Fidequity administrators did not respond to repeated requests for comment.Robert Mazur, an expert on money laundering and a former U.S. federal agent, said that based on the documents he reviewed, PwC and Fidequity “should have seriously considered” filing a suspicious activity report.Mazur, who went undercover to pose as a money launderer for Pablo Escobar’s Colombian drug cartel in the 1980s, identified the “success fee” paid to Almerk as a red flag because of the secrecy surrounding the company’s shareholders and because of the “intangible” nature of the services it allegedly provided.“Over the past decades, these types of payments have often been arranged as a cover for payments related to corruption and/or illegal activity,” he said.In October, ICIJ media partners interviewed Sodiam Chairman Eugénio Pereira Bravo da Rosa in the capital city of Luanda.Bravo da Rosa, who was appointed to the state diamond company in November 2017, said that Sodiam “has not profited one single dollar” from its investment in de Grisogono. But this one in May 2013 was especially sumptuous, with a fireworks show and a chamber orchestra to serenade guests as they took in the seaside views. Following the asset freezes, however, the World Economic Forum said dos Santos was no longer coming to the annual meeting.Isabel dos Santos was born in Azerbaijan in 1973, the daughter of José Eduardo dos Santos, the future Angolan president, and Tatiana Kukanova, a Russian her father met and married while studying for a degree in petroleum engineering.Dos Santos graduated from King’s College London in the 1990s with a degree in electrical engineering and business management, after which she worked for Coopers & Lybrand, an accounting firm that later became part of PwC, and as a project manager on a sanitation project in Luanda.In speeches and interviews, dos Santos promotes herself as a self-made billionaire and an inspirational figure whose great wealth is attributable to her shrewd business dealings.