Ghussun El Ahmad
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Syria crisis: 'Our children are dying and have no graves'

A report by more than twenty leading humanitarian and human rights organisations has accused the UN Security Council of failing civilians caught up in the conflict in Syria.

The report, produced to mark the fourth anniversary of the war, condemns the world's most powerful countries for not having the will to enforce their own UN resolutions on the free flow of humanitarian aid to the victims.

The BBC's Jim Muir has been to neighbouring Lebanon - to meet refugees there.

Go to next video: Has the world failed Syria's civilians?