Activists : The barrel bombs fell on a house in an opposition - held part of Aleppo . Al - Nusra Front claims responsibility for Tuesday 's twin car bombings in Syria . The car bombs exploded in an Alawite neighborhood ; President al - Assad is Alawite . The first attack killed 79 civilians and 21 pro - government fighters , they say .
Activists : The barrel bombs fell on a school in an opposition-held part of Aleppo . Al-Nusra Front claims responsibility for Tuesday 's twin car bombings in Homs . The car bombs exploded in an Alawite neighborhood ; President al-Assad is Alawite . The Homs attack killed 79 civilians and 21 pro-government fighters , dissidents say .