The death toll in Syria on Tuesday 21/12/2015 reached 21 deaths including five children, a woman, and one killed under torture.
Aleppo witnessed the killings of 11 civilians, eight in Turkish shelling on al-Baab, one executed at the hands of ISIS also in al-Baab, and one in clashes with government forces.
In rural Damascus, four civilians were killed; two in clashes with government forces, one in shelling, and one under torture at one of the opposition factions.
In addition, two were executed in Ar-Raqqah at the hands of ISIS, and another two in a landmine explosion in Al-Hassaka.
The killing of a civilian was documented in previous shelling targeting al-Waer neighbourhood, and another in shelling in Daraa.