The UN estimates there are still about 100,000 people trapped in eastern Aleppo. It also says that it appears that hundreds of men have gone missing after leaving eastern Aleppo for the government-controlled western side of the city.
In a speech over the weekend at a meeting of foreign ministers in Paris, Secretary of State John Kerry called on the Syrian and Russian governments to provide guarantees that the opposition fighters would not be "marching into a massacre.”
"The choice for many of them as they think about it today is: 'die in Aleppo or die in Idlib, but die.' That's the way they see the choice,” he said.
Dr. Zaher Sahloul, a Syrian-American physician, has made 14 humanitarian trips to Syria throughout the war. He joins us to talk about what’s happening now and what he says he fears will happen next.