BAGHDAD — As intra-Shiite conflict simmers in Iraq, arrests and questions about them threaten to derail attempts to restore calm after some of the worst violence in years.
On Sept. 8, the government-salaried, Shiite-led Popular Mobilization Units (PMU) stated they had conducted an operation in the early morning hours against a plan by supporters of the outlawed Baath Party to disrupt a massive Shiite religious ceremony underway.