WorldHostage exchange rejected: Mali Islamists threaten to attack AlgeriaAreeb HasniAugust 25, 2012August 26, 2012 by Areeb HasniAugust 25, 2012August 26, 2012 Bamako: An al-Qaeda-linked Islamist group based in northern Mali warned Algeria of deadly revenge on Friday after Algerian officials rejected a hostage exchange, media reported...