S/2018/619 18-09778 3/22 Talbisah and Tulul al-Humr. While those convoys proceeded on 30 May, United Nations personnel were not permitted to participate, on security grounds. 3. Since the adoption by the Security Council on 24 February 2018 of its resolution 2401 (2018), in which the Council demanded a cessation of hostilities, military conflict has continued in many parts of the Syrian Arab Republic. Throughout May, air strikes, artillery shelling and sniper fire were reported in the governorates of Aleppo, Idlib, Ladhiqiyah, Dayr al-Zawr, Homs, Hama, Damascus, Rif Dimashq, Dar‘a and Qunaytirah as military operations continued between the Government and its allied forces, and non-State armed opposition groups. Sporadic clashes occurred bet...