Dozens of people have been killed in the Syrian city of Aleppo as the situation lurches towards catastrophic, the United Nations says.
The latest air strikes killed almost 60 people including at the Medecins Sans Frontieres (Doctors Without Borders) -backed al-Quds hospital killed where at least 27 people died.
The fragile peace brokered in Syria now appears to be hanging by a string.
UN envoy for Syria Staffan de Mistura warned the peace treaty agreed between non-jihadist rebels and government forces on February 27 was now “barely alive”.
The head of UN humanitarian assistance to Syria, Jan Egeland, said he had been briefed on “the catastrophic deterioration in Aleppo over the last 24-48 hours… No-one doubts the severity of the situation.”
He warned that the humanitarian lifeline for much of the country was at risk.
“I could not in any way express how high the stakes are for the next hours and days.
“So many humanitarian health workers and relief workers are being bombed, killed, maimed at the moment that the whole lifeline to millions of people is now also at stake.”
