Assad troops force Syrian rebels to retreat from key town

Bashar al-Assad has vowed to recapture all of Syria as his forces made significant battlefield gains and drove rebel fighters out of a strategic town he once attacked with chemical weapons. Syrian regime troops pushed rebel forces from Khan Sheikhoun, a town where Assad’s jets once dropped chemical weapons and killed nearly 100 people, prompting Donald Trump to launch retaliatory airstrikes in 2017.  The town has been under rebel control since 2014 and its fall marks a victory fo