Activists : The barrel bombs fell on a school in an opposition-held part of Homs . Homs claims responsibility for the day 's twin car bombings in Homs . The car bombs exploded in an Alawite neighborhood ; President al-Assad is Alawite . Another 21 fighters from the government-funded , Alawite-manned National Defense Force were killed , the opposition Syrian Observatory for Human Rights said . The Al-Nusra Front attack killed 21 civilians and 21 pro-government fighters , dissidents say .
Activists : The barrel bombs fell on a school in an opposition-held part of Homs . Homs claims responsibility for the day 's twin car bombings in Homs . The car bombs exploded in an Alawite neighborhood ; President al-Assad is Alawite . The Al-Nusra Front attack killed 21 civilians and 21 pro-government fighters , dissidents say .