The Aleppo civil defence head of the volunteer rescue group White Helmets has described the moment a convoy delivering aid for 78,000 people came under attack, killing at least 21 people.
Ammar Alselmo, whose volunteers attend victims of airstrikes, said the area of the attack near Aleppo was transformed "from paradise to hell" shortly after 7pm on Monday, and hospitals in the city are struggling to cope.
Speaking to ITV News via Skype, he said: "After seven O'Clock it was horrible. It transformed from paradise to hell.
"In the besieged area of Aleppo now there is no medicine, the hospitals in Aleppo are out, there is no blood, there is no medicine for the critical situation.
"There is no food, nothing. I ask the world to stop this circle of madness, the circle of this terrible thing."
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