In war-torn Syria, just one convoy of humanitarian aid has reached desperate civilians so far this month, while numerous others have had to be aborted because of access difficulties, the UN said Thursday.

Updating journalists in Geneva, UN Special Adviser Jan Egeland said that “endless problems” had hampered planned deliveries, including lifesaving aid “for those in the greatest need”.

Mr Egeland added that the UN now has “written declarations of support” from armed opposition groups in eastern Aleppo for a plan to get aid in and the sick and injured out.

Here's Daniel Johnson's report from Geneva.

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