A/HRC/RES/37/29 strong conviction that those individuals responsible for the use of chemical weapons in the Syrian Arab Republic should be held accountable; 24. Condemns in the strongest possible terms the continued use of chemical weapons in the Syrian Arab Republic, which violates the Chemical Weapons Convention, Security Council resolution 2118 (2013) and the decisions of the Executive Council of the Organisation for the Prohibition of Chemical Weapons, including decision EC-M33/DEC.1, and the use of chemical weapons in contravention of well-established international standards and norms against such use, and expresses its strong conviction that those individuals responsible for the use of chemical weapons must be held accountable; 25. Recalls the reports of the Organisation for the Prohibition of Chemical Weapons-United Nations Joint Investigative Mechanism of 26 October 2017, and expresses grave concern at its findings that the Syrian authorities were responsible for the use of chemical weapons in attacks in the Syrian Arab Republic, including sarin in one attack — in Khan Shaykhun on April 2017 — and chlorine in three attacks — in Tallmannis in 2014 and in Qaminas and Sarmin in 2015 — and that the so-called Islamic State in Iraq and the Levant (Daesh) was responsible for two sulphur mustard attacks in the Syrian Arab Republic, in Marea in 2015 and in Umm Hawsh in September 2016; 26. Also recalls the reports of the Commission of Inquiry, and expresses grave concern at its findings that the Syrian authorities were responsible for the use of sarin on 4 April, 2017 in Khan Sheikhoun; 27. Expresses grave concern at the conclusion of the Organisation for the Prohibition of Chemical Weapons fact-finding mission that sarin was more than likely used on 30 March 2017 in Al-Lataminah; 28. Also expresses grave concern at numerous continuing allegations of the use of chemical weapons in recent months and weeks, including in Idlib Province and Eastern Ghouta; 29. Further expresses grave concern at the reports of the Technical Secretariat of the Organisation for the Prohibition of Chemical Weapons of July 2016, March 2017, July 2017 and October 2017, in which the Technical Secretariat reported that it had been unable verify that the declaration made by the Syrian authorities regarding their chemical weapons programme was accurate and complete, and calls upon the Syrian Arab Republic to cooperate fully with the Organisation to provide further clarification relating to the gaps, inconsistencies and discrepancies that remain concerning the declaration; 30. Demands that all parties identified in the reports of the Organisation for the Prohibition of Chemical Weapons-United Nations Joint Investigative Mechanism as having been involved in the use of toxic chemicals as weapons desist immediately from any further use; 31. Stresses the need to promote accountability for those responsible for the unlawful killings of civilians, and the importance of holding to account those responsible for all violations of international humanitarian law and all violations and abuses of international human rights law; 32. Recalls that the International Criminal Court was established to help to end impunity for applicable crimes in which the State is unwilling or unable to genuinely carry out investigations or prosecutions; 33. Emphasizes the need to ensure that all those responsible for violations of international humanitarian law or violations and abuses of international human rights law are held to account through appropriate, fair and independent national, regional or international criminal justice mechanisms, and stresses the need to pursue practical steps towards this goal, noting the important role that the International Criminal Court can play in this regard; 34. Welcomes the establishment of the International, Impartial and Independent Mechanism to Assist in the Investigation and Prosecution of Persons Responsible for the Most Serious Crimes under International Law Committed in the Syrian Arab Republic since March 2011 by the General Assembly in its resolution 71/248 of 21 December 2016, 5