Ahead of Israeli Prime Minister Benjamin Netanyahu’s speech before Congress on Wednesday, an old Washington Post article made the rounds anew on social media: Four years ago, the paper reported, the Netanyahus had brought loads of literal dirty laundry with them to D.C. so that they might get it cleaned while on official business. That the story would resurface now is ironic. If Netanyahu’s address to Congress showed anything, it was that the emperor well and truly has no clothes. Though he relied on familiar arguments and tried to play the role he built up for himself—the person most capable...