Petraeus and Broadwell Director David Petraeus resigned months after admitting an affair . His biographer was investigated over e-mails to another woman , a Afghanistan official says . Petraeus spent months in Afghanistan . She wrote a book about David Petraeus ' leadership qualities .
CIA Director David Petraeus resigned Friday after admitting an affair . His biographer was investigated over e-mails to another woman , a U.S. official says . Paula Broadwell spent months in Afghanistan . She wrote a book about Petraeus ' leadership qualities .