Iraq: The great divide

There are fewer people dying today because there are fewer left to kill; Sunnis and Shiites now inhabit separate walled enclaves, run by warlords and militias who have consolidated their control after mixed neighbourhoods were cleansed along sectarian lines.

Since April 2007, American forces have erected a series of concrete walls and checkpoints throughout the city to divide warring Sunnis and Shiites. Though these walls helped dampen sectarian violence, they may have bolstered sectarianism, isolating Iraqis from their neighbours and leaving them dependent on militias like the Mahdi Army for food, supplies and protection.