U.S. soldiers gather for a briefing during a combined joint patrol rehearsal in Manbij, Syria, in November 2018. The White House says about 400 troops will remain for an unspecified period of time.
U.S. Army photo by Spc. Zoe Garbarino via AP
CCTV images issued by the Metropolitan Police in London in 2015, show Shamima Begum (center) and her friends walking through security at Gatwick Airport, on their way to Syria.