By executing a prominent Shiite leader, the Saudi King and his son the Deputy Crown Prince sent a strong signal to Iran, to the kingdom’s beleaguered Shiite minority, and to the world. To its Iranian Shiite rival, Sunni Riyadh was saying that it would absolutely not tolerate intervention in its internal affairs. It was telling its own Shiites that it would not allow “Arab Spring”-like dissent. And to the world, Salman and Muhammad were signaling that the Saudis were growing into their new role as a defender and leader of the Sunni Muslim countries; especially since the Obama administration appears to be siding with Iran.