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S/2017/373 17-06903 7/7 completed in the coming weeks, at which time it will be submitted for the consideration of the States Parties and shared with the JIM. 20. At the aforementioned Fifty-Fourth Meeting of the Council, a draft decision entitled “Addressing the Situation Around the Alleged Use of Chemical Weapons in the Khan Shaykhun Area of Southern Idlib in the Syrian Arab Republic” (EC-M-54/DEC/CRP.1, dated 13 April 2017) was circulated by the Islamic Republic of Iran and the Russian Federation. A revised version of the draft decision (EC-M-54/DEC/CRP.1/Rev.1, dated 19 April 2017) was further amended on 20 April before being considered by the Council and put to a vote. The draft decision was not adopted. 21. The FFM has also continued its work to investigate the allegations of use of chemical weapons at Um-Housh on around 15 and 16 September 2016, as requested by the Syrian Arab Republic in a letter dated 29 November 2016. Based on the interviews carried out by the FFM and the documents and other related materials reviewed, as well as the results of blood sample analyses, the FFM can confirm that the two female casualties reported to have been involved in the incident in Um-Housh were exposed to sulfur mustard. The report on this incident will be submitted for the consideration of States Parties in the coming days, and will also be forwarded to the JIM. 22. Guided by Council decisions EC-M-48/DEC.1 and EC-M-50/DEC.1 (dated 23 November 2015), as well as United Nations Security Council resolution 2209 (2015), the FFM continued to study all available information relating to the allegations of use of chemical weapons in the Syrian Arab Republic. Conclusion 23. The main focus of the future activities of the OPCW Mission in the Syrian Arab Republic will be on the activities of the FFM and on the implementation of Council decisions EC-83/DEC.5 and EC-81/DEC.4, as well as on the destruction and verification of the remaining aircraft hangar, confirmation of the status of the two stationary above-ground facilities, and annual inspections of the underground structures already verified as destroyed