Editor’s Note: This story contains graphic images, including some of child victims.

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Bombing is the latest in a string of chemical attacks on Syrian city

UN investigation found that Syrian Air Force and ISIS have used chemical weapons

CNN  — 

More than 80 people were suffering severe breathing difficulties in Syria’s embattled city of Aleppo after another chemical attack Tuesday on a rebel-held neighborhood, said the Syrian Civil Defense, a volunteer rescue group.

Aleppo: Little boy a vivid reminder of war’s horror

The UK-based Syrian Observatory for Human Rights also