Until last weekend, the Ritz-Carlton in Riyadh’s exclusive Diplomatic Quarter was colloquially known as the Princes’ Hotel. It was a luxurious retreat from the heat, where royals could engage in the kind of wheeling and dealing with the global business elite that had made them millionaires on the back of the 1970s oil boom. No deal could be brokered without paying a bribe to at least one prince. Last Saturday that era of boundless opportunity and total impunity came to a dramatic end. The VIP guests were booted out, the front doors were shuttered, and heavily armed security forces took up positions around the perimeter.