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Photo by: Karim Kadim

Iraqis walk past posters of Abbas Mahmoud al-Maliki, an Iraqi Shiite fighter who was killed in Syria as he was protecting the Sayida Zeinab shrine, in Baghdad on Sunday, June 9, 2013. Iraqi Shiite fighters are playing an increasingly prominent role in neighboring Syria's civil war, exacerbating Iraq's own fraught sectarian tensions even as violence in the country spikes to its highest level in years. (AP Photo/Karim Kadim)

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