The initiative required UN staff to coordinate and observe the departure of inhabitants of eastern Aleppo.
The initiative required UN staff to coordinate and observe the departure of inhabitants of eastern Aleppo.
It was an idea that President Barack Obama said would be too hard to enforce.
54 buses leave for govt-held villages for evacuation
No group or individual have claimed responsibility for the attack.
The government said it had suspended the evacuations because the rebels had violated an agreement brokered by its ally Moscow and opposition supporter Ankara by taking hostages and weapons out of the city as they left.
Its statement came after Qatar denied involvement in Sunday's bomb attacks in Cairo
Flight MS 804 plunged into one of the deepest parts of the Mediterranean Sea on May 19
A new lawsuit provided light as to how the terror group gains funding.
The rebel withdrawal began a month to the day after President Bashar Al Assad's forces launched a new offensive to recapture Aleppo and will hand the regime its biggest victory in more than five years of civil war.
A new truce deal had come into effect after hours of violence Wednesday.