Syrian civil defence volunteers, known as the White Helmets, walk amidst the debris following a reported air strike by Syrian government forces in the rebel-held neighbourhood of Sukkari in the northern city of Aleppo on June 3, 2016. Regime air strikes killed dozens of civilians in the Syrian city of Aleppo and nearby areas as the UN Security Council prepared to discuss emergency aid drops to besieged areas. (Photo by Thaer Mohammed/AFP Photo)
