While we often refer to "an insurgency" in Iraq, there have actually been multiple insurgent groups, criminal organizations and militias which made up "the insurgency". Each of these groups had its own political goals, organization, and sometimes even fought against one another.
Yes, much like the People's Popular Front for the Liberation of Palestine, the Popular Peoples' Liberation Front for the Liberation of Palestine, and the dozen or so other Palestinian liberation groups found in the Monty Python movie, The Life of Bryan. Groups who hate each other even more than they hate the Romans.
I'm so cultured...
Romani ite domum!