According to the UN official, if the military activities in Aleppo continue, the eastern part of the city will be destroyed.
"The most urgent thing that we are going to ask for at the moment is actually shelter. Winter and places for people to be, winter is coming across. Now, I renew in this connection our request to al-Nusra to leave eastern Aleppo on a save passage. This will contribute [to] avoiding bloodshed and increase our leverage in insisting for an urgent pause," de Mistura told a briefing.
Humanitarian adviser to UN special envoy for Syria Jan Egeland called on all stakeholders to influence parties on the ground in Syria as humanitarian situation was likely to worsen in winter.
"At the end of this month, things will slow down because of bureaucracy and not being so active. So, our message to these countries who can influence all parties on the ground including the government was now is the time that their foreign ministers, their heads of government start making messages to the parties in Syria," Egeland told a briefing.