FILE - In this frame grab from video taken on Dec. 20, 2019, militants of the al-Qaida-linked Hayat Tahrir al-Sham try to disperse people who have gathered at the Bab al-Hawa border gate to protest the ongoing bombing campaign in Syria's rebel-controlled Idlib province by the government and its Russian ally. Intermingled among 3 million civilians under siege in the Syrian government's assault on the last opposition stronghold are tens of thousands of al-Qaida-linked fighters and other militants who came from around the world to take part in the country's civil war. (AP Photo, File)
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