An Afghan protester screams near the scene of a suicide attack that targeted crowds of minority Shiite Hazaras during a demonstration in Kabul on Saturday. Wakil Kohsar /AFP/Getty Images hide caption

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Wakil Kohsar /AFP/Getty Images

Sunni imam Aziz Babaei, in his prayer room in Tehran, has been telling other Iranian Sunnis to be careful. One radical act, he warns, could bring pain on the whole community. Steve Inskeep/NPR hide caption

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Steve Inskeep/NPR

The Precarious Existence Of Iran's Sunni Muslims

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Iranian security forces stand guard as protesters demonstrate outside the Saudi Arabian Embassy in Tehran. The crowd was decrying the execution of Nimr al-Nimr, a prominent Saudi Shiite cleric, by Saudi authorities — an execution that has heightened sectarian tensions in the region. Anadolu Agency/Getty Images hide caption

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Anadolu Agency/Getty Images

A volunteer at a Christian church in Qosh, Iraq, loads aid onto a handcart Monday for delivery to displaced Shiites who are sheltering there. Alice Fordham/NPR hide caption

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Alice Fordham/NPR

For Iraqis In Crisis, Dividing The Country Seems A Poor Solution

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People walk by a damaged police station in Mosul on July 15. The militants of the Islamic State are in control of the key city and have acted against former members of Saddam Hussein's regime who helped them drive out the Iraqi army last month. AP hide caption

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AP

Common Ground Between Iraq's Rebels May Be Crumbling

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Iraqi Shiite volunteers with the Labayk ya Hussein Brigade take part in a training session in the holy city of Najaf in late June. Clerics in the city called for Shiites to step forward and fight the Sunni group formerly known as the Islamic State of Iraq and Syria (which now calls itself simply the Islamic State). Haidar Hamdan/AFP/Getty Images hide caption

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Haidar Hamdan/AFP/Getty Images

In Iraq's Sacred City Of Najaf, Clerics Call On Shiites To Fight

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Pakistani police officers and residents gather at the site of a bomb blast that targeted paramilitary soldiers in a commercial area in the city of Quetta, killing 11 people. Later in the day, twin blasts at a snooker club in the city killed at least 80 people. Arshad Butt/AP hide caption

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Arshad Butt/AP