BAGHDAD — The Shiite-led government is cracking down on U.S.-backed Sunni Arab fighters in one of Iraq's most turbulent regions, arresting some leaders, disarming dozens of men and banning them from manning checkpoints except alongside official security forces.
The moves in Diyala province reflect mixed views on a movement that began in 2007 among Sunni tribes in western Iraq who revolted against al-Qaida in Iraq and joined the Americans in the fight against the terrorist network.
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