Dick Cheney is reminding Republicans that they need to defend themselves when attacked. When President Obama released the Justice Department interrogation memos a month ago, Cheney denounced him for doing so. He explained why it was inappropriate and unwise to release such documents. But he did more. He didn't just defend himself and the administration in which he served. He fought back, and encouraged others to do so. So while some Hill Republicans were fretting about getting a positive message out and others were launching substance-free listening tours, while GOP operatives were wringing their hands about whether Republicans could recover...