The rulers of Saudi Arabia trembled when the Arab Spring revolts broke out four years ago. But far from undermining the Saudi dynasty, the ensuing chaos across the region appears instead to have lifted the monarchy to unrivaled power and influence. As a new king assumes the throne in Riyadh, the stability-first authoritarianism that the Saudis have long favored is resurgent from Tunis to Cairo to Manama. The election-minded Islamists that the Saudis once feared are on the run. Prince Mohammed bin Nayef, the interior minister who spearheaded the push against them, was rewarded last week with his elevation to deputy crown prince, the first in his generation in the line of succession. The catch, analysts and diplomats say, is that the ascendance of the Saudis is largely a byproduct of the feebleness or near-collapse of so many of the states around them, including Iraq, Egypt, Syria, […]