“There’s a saying in Saudi Arabia: those saying they know when the oil will run out have no idea. Those who know don’t say. The state of its oil reserves is this country’s most closely guarded secret. We don’t need to know that, though, to say the current model of state functioning, which consists of ‘eating’ money from oil sales, will exhaust itself,” says Dr. hab. Łukasz Fyderek, a political scientist specializing in Middle East issues.