A Syrian man collects samples from the site of a suspected toxic gas attack in Khan Sheikhun, in Syrias northwestern Idlib province, on April 5, 2017. International outrage is mounting over a suspected chemical attack that killed scores of civilians in Khan Sheikhun on April 4, 2017. / AFP PHOTO / Omar haj kadour (Photo credit should read OMAR HAJ KADOUR/AFP/Getty Images)
