A convoy of relief trucks crossed front lines into the rebel-held Damascus suburb of eastern Ghouta on Friday and unloaded all its food for the trapped population, despite fighting that the Red Cross said had come "extremely close."

The Syrian government's two-week onslaught in eastern Ghouta has killed around 950 civilians, the war monitoring group Syrian Observatory for Human Rights said.

For eastern Ghouta's civilians, mostly trapped underground with little food or water, the choice of whether or not to emerge to seek supplies may be one of life or death.