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NEW YORK, NY - JULY 22: Riyad H. Mansour, Palestine's Ambassador to the United Nations, holds up a picture from the Israeli operation in Gaza during a Security Council meeting at the UN on July 22, 2014 in New York City. The Israeli operation in the Gaza Strip is entering the third week with 27 Israeli's dead and over 500 people killed in Gaza, the vast majority being civilians. (Photo by Kena Betancur/Getty Images)
NEW YORK, NY - JULY 22: Riyad H. Mansour, Palestine's Ambassador to the United Nations, holds up a picture from the Israeli operation in Gaza during a Security Council meeting at the UN on July 22, 2014 in New York City. The Israeli operation in the Gaza Strip is entering the third week with 27 Israeli's dead and over 500 people killed in Gaza, the vast majority being civilians. (Photo by Kena Betancur/Getty Images)

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Mansour: Must end onslaught on civilians

CNN's Richard Quest speaks to Riyad Mansour about what it would take for a cease-fire to be a success.

Mansour: Must end onslaught on civilians

CNN's Richard Quest speaks to Riyad Mansour about what it would take for a cease-fire to be a success.