Screening out Islamic State militants

Six months into the Mosul offensive, thousands of civilians are still fleeing the city, with a recent surge of up to 15,000 a day passing through Hamam Alil. That has raised the stakes of security screenings, which need to proceed quickly to avoid a bottleneck but also sensitively to prevent displaced Sunni Muslims from becoming alienated from the central government — dominated by rival Shiites — and at the same time stop militants from infiltrating displaced persons camps.

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