Lights and smoke are seen during Syrian government bombardment on the rebel-controlled town of Arbin, in the besieged Eastern Ghouta region on the outskirts of the capital Damascus. Ammar Suleiman / AFP
Lights and smoke are seen during Syrian government bombardment on the rebel-controlled town of Arbin, in the besieged Eastern Ghouta region on the outskirts of the capital Damascus. Ammar Suleiman / AShow more

More than half a million killed in Syria's war