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Associated Press
A Palestinian worker carries a mattress from a destroyed carton factory after it was hit in an Israeli air strike in the Nusseirat refugee camp, in the central Gaza Strip, Tuesday, July 29, 2014. Israel escalated its military campaign against Hamas on Tuesday, striking symbols of the militant group's control in Gaza and firing tank shells that Palestinian officials said shut down the strip's only power plant in the heaviest bombardment in the war so far. (AP Photo/Adel Hana)

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