People examine the debris following a suicide bomb attack Friday at the Imam Ali mosque in the eastern village of al Qudaih in Saudi Arabia's Qatif province. A branch of the self-declared Islamic State has claimed responsibility for the attack. Reuters/Landov hide caption

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An Afghan security officer runs toward the scene of Friday's bombing in Kabul. Three NATO personnel were killed and at least six Afghan civilians were wounded. Omar Sobhani /Reuters /Landov hide caption

toggle caption Omar Sobhani /Reuters /Landov

This car was among many vehicles destroyed by bombs Tuesday in Beirut. Nearby buildings suffered extensive damage. More than 20 people, including an Iran diplomat, were killed by the explosions near Iran's embassy. Nabil Mounzer /EPA/LANDOV hide caption

toggle caption Nabil Mounzer /EPA/LANDOV

A screen grab from the surveillance video showing the man who it's suspected set off a bomb aboard a bus full of Israeli tourists in Burgas, Bulgaria. BGNES.com hide caption

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