到2017年初，在阿斯塔纳，伊朗、俄罗斯和土耳其承诺就冲突降级和建立信任进行合作。该年晚些时候，约旦、美国和俄罗斯联邦开始努力促成叙利亚西南地区冲突降级。虽然结果参差不齐，但拯救了生命。然而令人遗憾的是，实际建立的四个冲突降级安排，其中三个宣告终结并造成生命损失。另外一个即伊德利卜地区——该地有300多万平民——的冲突降级安排维持至今，我们都支持这一安排。
By the start of 2017, in Astana Iran, Russia and Turkey committed to cooperating on de-escalation and confidence-building. Jordan, the United States and the Russian Federation began to work on de-escalation in the south-west later in the year. Although the results were mixed, but lives were saved. Sadly however, three of the four de-escalation arrangements that did stand came to an end. There were also lives lost. One of those areas — Idlib, where there are more than 3 million civilians — did hold and is still holding and we all support that arrangement.