War_Conflict

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A "for sale" sign hangs in front of a house in Plymouth, Mass., on Tuesday, March 5, 2013. Sales of previously occupied homes dipped in March as the supply remained tight. (AP Photo/Steven Senne)

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** FILE ** Former Pakistani President Pervez Musharraf arrives at an anti-terrorism court in Islamabad on Saturday, April 20, 2013. (AP Photo/Anjum Naveed)

** FILE ** Former Taliban members, handcuffed, stand in line after turning in their weapons during a ceremony with the Afghan government in Herat, Afghanistan, on Sunday, April 7, 2013, as part of a peace-reconciliation program. (AP Photo/Hoshang Hashimi)

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Police in tactical gear surround an apartment building while looking for a suspect in the Boston Marathon bombings in Watertown, Mass., Friday, April 19, 2013. The bombs that blew up seconds apart near the finish line of the Boston Marathon left the streets spattered with blood and glass, and gaping questions of who chose to attack and why. (AP Photo/Charles Krupa) Police in tactical gear surround an apartment building while looking for a suspect in the Boston Marathon bombings in Watertown, Mass., Friday, April 19,

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Sticking together: A group of first responders to the Boston Marathon bombings comfort one another during a tribute during a baseball doubleheader between the Boston Red Sox and the Kansas City Royals on Sunday.

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Remembering: An interfaith service was held Sunday near a makeshift memorial on Boston's Boylston Street, near the site of the bombings, to honor the victims. (Associated Press)