Why Syrian civilians get killed with barrel bombs and chemical attacks

(CNN) – These methods of warfare are so grotesque, they’re banned by international law. Airstrikes on civilian hospitals. Barrel bombs that kill and maim indiscriminately. Chemical attacks that suffocate children with their eyes still open. But these are the threats Syrian civilians face every day. An estimated 90,000 to 120,000 civilians have been killed since the war began six years ago.

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