Two of Osama's widows were involved in a vicious catfight in a Pakistani prison over the youngest wife's suspicion that the eldest had betrayed the slain al-Qaeda leader, a media report said on Thursday. The brawl took place as Khairiah Saber, Osama Bin Laden's eldest wife branded her younger rival Amal Ahmed al-Sadah, a slut, sparking off a vicious catfight in the prison. The brawling pair, kept in custody since the world's most wanted terrorist was killed last May, had to be pulled apart by shocked guards. Guards were under "strict instructions" never to leave oldest wife Khairiah, 61, alone...