UN Secretary-General Ban Ki-moon, left, makes a statement regarding the violence in Gaza before his meeting with U.S. Secretary of State John Kerry in Cairo, Thursday. Israeli tank shells hit a compound housing a UN-run school in the Gaza Strip on Thursday, killing at least 15 people and wounding dozens who were seeking shelter from fierce clashes on the streets outside, Palestinian officials said, as Israel pressed forward with its 17-day war against the territory's Hamas rulers.
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