“Saudi Arabia’s Crown Prince Mohammed bin Salman says he’s cracking down on corruption. But the sweeping arrests of cabinet ministers and senior princes Saturday night looked to many astonished Arab observers like a bold but risky consolidation of power.” WaPo’s David Ignatius explains what’s at stake after the Saudi crown prince made a very risky power play.

+ “Among Prince Alwaleed’s crown jewels: sizable stakes in Twitter, Lyft and Citigroup. He has gone into business with some of the corporate world’s biggest titans, including Bill Gates, Rupert Murdoch and Michael R. Bloomberg. His investments span the globe, including the Four Seasons Hotel George V in Paris, the Savoy in London and the Plaza in New York.” The NYT on the arrest of Prince Alwaleed bin Talal, one of the world’s foremost investors.