When someone shows up with a billion dollars you have to ask what is the origin of the wealth? This is not explained. Peter Lewis, an African studies professor at Johns Hopkins University in the US, told Forbes: "The source of funds and corporate governance are very murky. When you tease out the ownership and controlling interests in Angola it reads like a Who's Who of family members and party and military chiefs."
The anti-corruption organisation Transparency International recently ranked Angola 168th out of 178 countries in its corruption perception index.