Rubuta ci gaba don wannan sakin layi - Kasashe da yawa, gami da Amurka da Tarayyar Turai sun zargi gwamnatin Siriya da kai hare-haren sinadarai da yawa. Bayan hare-haren Ghouta na 2013 da matsin lamba na kasa da kasa, Siriya ta shiga Yarjejeniyar Makamai masu guba da kuma lalata makamai masu guba na Siriya. A cikin 2015 tawagar Majalisar Dinkin Duniya ta bayyana alamun da ba a bayyana ba a baya na mahaɗan sarin a cikin "wurin bincike na soja". Bayan harin da aka kai a watan Afrilun 2017 a Khan Shaykhun, Amurka ta kaddamar da harin farko
a kan sojojin gwamnatin Siriya. A ranar 14 ga Afrilu 2018, Amurka, Faransa da Ingila sun aiwatar da jerin hare-haren soja na hadin gwiwa kan wurare da yawa na gwamnati a Siriya, gami da cibiyar binciken kimiyya ta Barzah, bayan harin sinadarai a Douma.