al-qaida's no. 2 leader calls on sunnis to purge traitors
CAIRO, Egypt -- Al-Qaida's No Ayman al-Zawahri warned of traitors among insurgents Iraq and called on Iraqi Sunni Arab tribes to purge those. Al-Zawahri's comments were aimed at undermining so-called awakening councils -- the groups of Iraqi Sunni that U.S military has backed to help..…