You can understand Barack Obama’s frustration now that he finally put down his putter on Martha’s Vineyard and noticed that something was going on in Cairo. John Kerry bestirred himself, too, pronouncing the chaos in Cairo “dreadful.” That’s pretty strong language for a tea-sipper. There’s glum agreement everywhere that there’s no peace for Egypt in sight. The nations of the West, including Israel, must keep looking, but we fool only ourselves if we think there’s a magic elixir to encourage the lion to lie down with the lamb and not regard it only as dinner. In the days following Sept....