Hundreds of people are believed to have been killed in an evident gas attack on rebel-held parts of eastern Damascus.
The Syrian government acknowledged it had launched a major offensive though denied using chemical weapons.
The United Nations Security Council, in response, outlined that it was necessary to clarify what happened in the alleged chemical attack, stating,
“There is strong concern among council members about the allegations and a general sense that there must be clarity on what happened and the situation must be followed closely.”