Perspective: The new battle for Basra

Above: Shiite men fire guns into the air following Friday prayers in Basra in March.

As British forces pull back from Basra in southern Iraq, Shiite militias there have escalated a violent battle against each other for political supremacy and control over oil resources, deepening concerns among some U.S. officials in Baghdad that elements of Iraq's Shiite-dominated national government will turn on one another once U.S. troops begin to draw down.

Three major Shiite political groups are locked in a bloody conflict that has left the city in the hands of militias and criminal gangs, whose control extends to municipal offices and neighborhood streets. The city is plagued by "the systematic misuse of official institutions, political assassinations, tribal vendettas, neighborhood vigilantism and enforcement of social mores, together with the rise of criminal mafias that increasingly intermingle with political actors," a recent report by the International Crisis Group said.

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