The latest figure caught up in the Petraeus scandal is General John Allen, current Commander of US and NATO troops in Afghanistan. The Pentagon says he exchanged tens of thousands of pages of e-mail with one of the women caught up in the FBI’s Petraeus investigation. (Jill Kelley, a socialite friend of David and Holly Petraeus, told the FBI she’d been getting threatening emails. The FBI traced them to Petraeus biographer Paula Broadwell and discovered that she and Petraeus had an affair. Petraeus resigned as Director of the CIA.) Have national security or military effectiveness been compromised? Is there a cover-up of the CIA’s role in Benghazi, or are routine cases of high-level hanky-panky being magnified by the politics of exposure?