The most arbitrary and distorted borders in the world are in Africa and the Middle East. Drawn by self-interested Europeans (who have had sufficient trouble defining their own frontiers), Africa’s borders continue to provoke the deaths of millions of local inhabitants. But the unjust borders in the Middle East — to borrow from Churchill — generate more trouble than can be consumed locally.

The study was based on 55 children who were bed-wetters at ages 5 to 13 and 117 in the same age range who were not. Of the bed-wetters, 45 percent had been breast-fed, compared to 81 percent of those who were continent at night. The study also found that babies who