"Rebels and witnesses said Syrian jets resumed dropping barrel bombs - drums or cylinders packed with explosives and shrapnel that cause indiscriminate destruction on the ground."

The Syrian rebels/terrorists have completely lost the narrative in this war. It was bound to happen. Any war that can't be concluded quickly will eventually expose the lies that it's based on.

A barrel bomb is a bulky weapon that can't be mounted on a jet. They're dropped by helicopters usually, but could also be dropped from cargo planes.

A "drum or cylinder packed with explosives and shrapnel" describes every bomb, including the ones that the Canadian Armed Forces have dropped in Syria and Iraq. They are INDISCRIMINATE weapons by nature. Their lethal effects cannot be restricted to only combatants. Civilians are equally vulnerable.