A fighter of Syrian Democratic Forces stands amidst the ruins of buildings near the Clock Square in Raqqa, Syria October 18, 2017. Picture taken October 18, 2017.     REUTERS/Erik De Castro
A fighter of the Syrian Democratic Forces stands amid the ruins of buildings near the Clock Square in Raqqa, Syria on October 18, 2017. Erik De Castro / Reuters

ISIL caliphate's end 'in sight' after Raqqa fall, Trump says