Suspected Syria chemical attack

Syria chemical attacks: How one man lost his family in Khan Sheikhoun
Abdul Hamid Youssef describes how he lost his wife, his twins and other family members in a chemical attack.

How chemical weapons have helped bring Assad close to victory

After seven years of civil war in Syria, President Bashar al-Assad appears close to victory against the forces trying to overthrow him.

A BBC investigation shows the extent to which chemical weapons have been crucial to his war-winning strategy.

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Wounded Syrian boy receiving oxygen through a mask
EPA