Nusra Front terrorists have the ability to produce weaponized chlorine, UN Special Envoy for Syria Staffan de Mistura said in a press conference on Tuesday.
"I have been saying, and I confirm my thinking that the government on the one hand and al-Nusra [on the other], which is an organization declared terrorist by the [UN] Security Council, are having the capability to produce weaponized chlorine," de Mistura told reporters.
https://sputniknews.com/middleeast/201809041067746725-nusra-front-chlorine-syria/
https://news.un.org/en/story/2018/09/1018342