Breakup of the West?

By the time Air Force One started down the runaway at Naval Air Station Sigonella in Sicily, to bring President Trump home, the Atlantic had grown markedly wider than it was when he flew to Riyadh.

In a Munich beer hall Sunday, Angela Merkel confirmed it.

Europe must begin to look out for itself, she said, “take our fate into our own hands. … The times in which we could rely fully on others, they are somewhat over.”

Merkel’s apprehensions are understandable. A divorce could be in the cards. D...