Dr. Ben Carson has the most moving personal narrative in modern presidential politics. His mother, one of 24 children, had only a third-grade education. She was married at age 13, bore Ben and his brother, and then raised the boys as an impoverished single mother in Detroit. As a young boy, Carson was a terrible student.

Saudi Arabia isn't the enemy, but it is a problem. It could make so much positive difference in the Islamic world if it used its status to soothe Sunni-Shiite tensions and encourage tolerance. For a time, under King Abdullah, it seemed that the country was trying to reform, but now under King Salman, it has stalled.

Saudi Arabia has supported Wahhabi madrasas in poor countries in Africa and Asia, exporting extremism and intolerance. Saudi Arabia also exports instability with its brutal war in Yemen, intended to check what it sees as Iranian influence.

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