A number of insurgent groups have refused to take orders from al-Qaeda's leader in Iraq, Abu Musab al-Zarqawi, since elements linked to his Tawhid e Jihad formation killed a number of tribal and religious leaders, according to well-informed sources in the insurgent stronghold of Ramadi, in Iraq's central Anbar province. " There have been armed clashes in the past few days between al-Zarqawi's supporters, and elements from the national resistance," sources speaking on condition of anonymity told Adnkronos International (AKI). These clashes gained momentum after a number of local tribal leaders created a 3,000-strong militia whose mandate is to protect...