Bombs have exploded in cities across Iraq in one of the country's deadliest waves of violence this year.
Bombs Kill Shi'ite Pilgrims Across Iraq
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A man wounded in a bomb attack lies at a hospital in Karbala, Iraq, June 13, 2012.
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Shi'ite pilgrims make their way to Kadhimiya, Baghdad, Iraq, June 13, 2012.
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A resident sprays water as he cools off Shi'ite pilgrims in Baghdad, Iraq, June 13, 2012.