Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

A displaced Syrian boy looks through a window of a truck loaded with belongings, in the town of Sarmada in Idlib province, Syria, January 28, 2020.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

Displaced Syrian children who fled from southern Idlib walk under the rain in Afrin, Syria February 7, 2020.

Syrian army soldiers stand at a checkpoint on the road outside Maarat al-Numan, Syria, January 30, 2020.

Displaced Syrian boys ride on a truck with belongings in northern Idlib, Syria January 30, 2020.

A view of the trucks carrying belongings of displaced Syrians, in northern Idlib, Syria January 30, 2020.

Displaced Syrian children, who fled from southern Idlib, stand outside a tent in Afrin, Syria February 6, 2020.

Displaced Syrian women and children, who fled from southern Idlib, gather around a fire in Afrin, Syria February 6, 2020.

Displaced Syrian children who fled from southern Idlib look through a tent in Afrin, Syria February 7, 2020.

A displaced Syrian child who fled from southern Idlib walks under the rain in Afrin, Syria February 7, 2020.

A displaced Syrian child who fled from southern Idlib looks through a tent in Afrin, Syria February 7, 2020.

A Syrian army soldier watches the road as a cat runs across it in Maarat al-Numan, Syria, January 30, 2020.

Syrian army soldiers stand on a rooftop in Maarat al-Numan, Syria, January 30, 2020.

A Syrian army soldier stands on a roof near a street sign that was written by rebels in the streets of Maarat al-Numan, Syria, January 30, 2020.

An unexploded missile is seen in a field off the road outside Maarat al-Numan, Syria, January 30, 2020.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

A view of trucks carrying belongings of displaced Syrians, is pictured in the town of Sarmada in Idlib province, Syria, January 28, 2020.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

Syrian army soldiers rest in the streets of Maarat al-Numan, Syria, January 30, 2020.

Syrian army soldiers gesture on the highway outside Maarat al-Numan, Syria, January 30, 2020.

A Syrian army soldier walks through the streets of Maarat al-Numan, Syria, January 30, 2020.

Displaced Syrian children, who fled from southern Idlib, cut down trees in Afrin, Syria February 6, 2020.

A general view of trucks carrying belongings of displaced Syrians, is pictured in the town of Sarmada in Idlib province, Syria, January 28, 2020.

Trucks carry belongings of people fleeing from Maarat al-Numan, in northern Idlib, Syria December 24, 2019.

Belongings of displaced Syrians are seen on a truck in northern Idlib, Syria January 30, 2020.

A Syrian army soldier gestures in Maarat al-Numan, Syria, January 30, 2020.

A Syrian army soldier carries food as he walks through Maarat al-Numan, Syria January 30, 2020.

Displaced Syrian women who fled from southern Idlib wash clothes in Afrin, Syria February 7, 2020.

A Syrian army soldier stands on the highway outside Maarat al-Numan, Syria, January 30, 2020.