The Gaza war is a reminder that the Europeans left behind an unstable status quo a century ago. Absent a Sunni consensus, Iran is making an indirect power play. Iran’s weakness is also a strength: as non-Arab, Shiite Muslims, Iran’s leaders can’t trace their ancestry to the prophet Muhammad’s qureysh tribe—as can Jordan’s and Morocco’s monarchs, and as ISIS’s Abu Bakr al-Baghdadi claimed. Though around 85 percent of Muslims are Sunni, the demography of global Islam has long favored much larger non-Arab populations. The dynamic might be resolved with a Vatican City-style solution for Al Aqsa.