The world should push the crown prince to reform Saudi Arabia, not wreck it

IN A kingdom where change comes only slowly, if at all, the drama of recent days in Saudi Arabia is astounding. Scores of princes, ministers and officials have been arrested or sacked, mostly accused of corruption. Many of those arrested are being held in the splendour of the Ritz-Carlton hotel in Riyadh. About $800bn-worth of assets may have been frozen. At the same time a missile fired from Yemen was intercepted near Riyadh, prompting Saudi Arabia to accuse Iran of an “act of war”.Upheaval at home and threats of war abroad make a worrying mix in a country that has, hitherto, held firm amid the violent breakdown of the Middle East. The world can ill afford instability in the biggest oil exporter, the largest Arab economy and the home of Islam’s two holiest sites.