DAMASCUS, SYRIA - DECEMBER 26: Syrian men wait for first aid as they wounded after Syrian Regime air forces' 'vacuum bomb' attack, killed 6 people, 3 of them children, and wounded 40 others, in Ain Tarma town of Damascus, Syria on December 26, 2014. Vacuum bomb is a type of explosive that utilizes oxygen from the surrounding air to generate an intense, high-temperature explosion. (Photo by Ammar Sulayman/Anadolu Agency/Getty Images)
