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Smoke from flares rises in the sky in Gaza City, in the northern Gaza Strip, Thursday, July 17, 2014. Israel launched a large-scale ground offensive in the Gaza Strip Thursday, escalating a 10-day military operation to try to destroy Hamas' weapons arsenal, rocket firing abilities and tunnels under the Palestinian territory's border with Israel. It was the first major Israeli ground offensive in Gaza in just over five years.
Smoke from flares rises in the sky in Gaza City, in the northern Gaza Strip, Thursday, July 17, 2014. Israel launched a large-scale ground offensive in the Gaza Strip Thursday, escalating a 10-day military operation to try to destroy Hamas' weapons arsenal, rocket firing abilities and tunnels under the Palestinian territory's border with Israel. It was the first major Israeli ground offensive in Gaza in just over five years.

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    Hamas official speaks to CNN

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Hamas official speaks to CNN

Why not agree to a cease fire and end civilian casualties? We have demands, says Hamas senior official.

Hamas official speaks to CNN

Why not agree to a cease fire and end civilian casualties? We have demands, says Hamas senior official.