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Islamic State's toxic "chlorine gas" bombs - BBC News

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Aleppo: 'Chlorine attack' reported by doctors

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Raw: Suspected Chlorine Gas Attack in Aleppo

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Footage shows 'chlorine attack' aftermath in Syria - BBC News

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Chlorine gas attack reported in Syria

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OPCW to investigate Syria chlorine attack

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The Rise of Chlorine Gas: The First Mass Use of a Chemical Weapon

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Syria war: 'Chlorine' attack video moves UN to tears - BBC News

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Children among dead in suspected chlorine gas attack in Aleppo

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Children in Syria struggling to breath after suspected chlorine attack

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Chlorine gas explosion at Jordan’s Aqaba port kills at least 12, injures over 250

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Medics in Syria describe smelling chlorine on survivors of alleged chemical attack

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Dozens ill after alleged Syrian government chlorine attack on Aleppo

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Iraqi Kurds allege chlorine gas attack by ISIL

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First World War tech: Chlorine Gas & Gas Masks

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Chlorine Gas Attack Alleged in Aleppo

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US to examine Syria chlorine-attack claim

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UN tears over Syria chlorine attack video

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SYRIA - UN look into evidence of chlorine attack on civilians

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WWI The First Modern War: The Germans Release the First WMD | History