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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

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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Common Ground Between Iraq's Rebels May Be Crumbling

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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