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An Israeli army officer gives journalists a tour, Friday, July 25, 2014, of a tunnel allegedly used by Palestinian militants for cross-border attacks, at the Israel-Gaza Border. A network of tunnels Palestinian militants have dug from Gaza to Israel, dubbed "lower Gaza" by the Israeli military, is taking center stage in the latest war between Hamas and Israel. (AP Photo/Jack Guez, Pool)
An Israeli army officer gives journalists a tour, Friday, July 25, 2014, of a tunnel allegedly used by Palestinian militants for cross-border attacks, at the Israel-Gaza Border. A network of tunnels Palestinian militants have dug from Gaza to Israel, dubbed "lower Gaza" by the Israeli military, is taking center stage in the latest war between Hamas and Israel. (AP Photo/Jack Guez, Pool)

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