S/2018/60 18-00842 3/20 4 May, Iran (Islamic Republic of), the Russian Federation and Turkey, agreed on two documents: an agreement to form a working group on the release of detainees/abductees, the handover of bodies and the identification of missing persons; and a joint statement on humanitarian mine action. The Astana guarantors also issued a joint statement that expressed support for the convening of a Syrian national dialogue congress in Sochi, Russian Federation, describing it as an initiative to complement United Nations intra-Syrian talks in Geneva. 5. During the reporting period, military activity in parts of the country had a significant impact on the humanitarian situation, causing further damage to civilian infrastructure such a...