AP
FILE -- In this file photo made from the footage taken from Russian Defense Ministry official web site on Tuesday, Nov. 17, 2015, Russian Tu-22 bombers escorted by the Su-27s fighter jets drop bombs on a target in Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. (AP Photo/ Russian Defense Ministry Press Service, File)
- HOGP
In this photo provided on Thursday Jan. 4, 2018 by the Syrian anti-government activist group, Edlib Media Center, EMC, which has been authenticated based on its contents and other AP reporting, shows Syrian citizens load their belongings at a pickup, as they flee their house which attacked by Russian airstrikes, in Tel al-Toukan village, eastern Idlib province, Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. (Edlib Media Center via AP)
- Uncredited
In this photo provided on Tuesday Jan. 2, 2018 by the Syrian anti-government activist group, Edlib Media Center, EMC, which has been authenticated based on its contents and other AP reporting, shows Syrian displaced man and boy who fled from a countryside village of Idlib city, which is under the attack of the Russian and Syrian government airstrikes, sits outside their tent at an informal refugee camp, near Idlib, Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. The Arabic words on the right read:"Idlib countryside." (Edlib Media Center via AP)
- Uncredited
In this photo provided on Wednesday Jan. 3, 2018 by the Syrian anti-government activist group, Edlib Media Center, EMC, which has been authenticated based on its contents and other AP reporting, shows members of the Syrian civil defense known as the White Helmets, gathering at a street which was attacked by Russian airstrikes, in Maarat al-Nuaman town, southern Idlib province, Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. (Edlib Media Center via AP)
- Uncredited
In this photo provided on Wednesday Jan. 3, 2018 by the Syrian anti-government activist group, Edlib Media Center, EMC, which has been authenticated based on its contents and other AP reporting, shows members of the Syrian civil defense known as the White Helmets, gathering at a street which was attacked by Russian airstrikes, in Maarat al-Nuaman town, southern Idlib province, Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. (Edlib Media Center via AP)
- Uncredited
In this photo provided on Tuesday Jan. 2, 2018 by the Syrian anti-government activist group, Edlib Media Center, EMC, which has been authenticated based on its contents and other AP reporting, shows a Syrian displaced man who fled from a countryside village of Idlib city, which is under the attack of the Russian and Syrian government airstrikes, sits outside his tent at an informal refugee camp, near Idlib, Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. The Arabic words on the right read:"Idlib countryside." (Edlib Media Center via AP)
- Uncredited
In this photo provided on Wednesday Jan. 3, 2018 by the Syrian anti-government activist group, Edlib Media Center, EMC, which has been authenticated based on its contents and other AP reporting, shows members of the Syrian civil defense known as the White Helmets, gathering at a street which was attacked by Russian airstrikes, in Maarat al-Nuaman town, southern Idlib province, Syria. Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in. (Edlib Media Center via AP)
- Uncredited