29. 回顾禁止化学武器组织－联合国联合调查机制最近的有关报告，其中认为，在 2014 年至 2017 年间，叙利亚当局对四次使用化学武器事件负有责任，所谓的“伊拉克和黎凡特伊斯兰国”(达伊沙)对两次化学武器袭击负有责任；
29. Recalls the relevant reports of the Organisation for the Prohibition of Chemical Weapons-United Nations Joint Investigative Mechanism, in which they found the Syrian authorities responsible for the use of chemical weapons on four occasions, and that the so-called Islamic State in Iraq and the Levant (Daesh) was responsible for two chemical weapons attacks between 2014 and 2017;