UN Special Envoy for Syria Staffan de Mistura attends a meeting during the consultations on Syria in Geneva, Switzerland, on Sept. 11, 2018. UN Special Envoy for Syria Staffan de Mistura on Tuesday continued to meet diplomats from Iran, Russia and Turkey in Geneva to discuss the process of moving forward to end the Syrian conflict with constitution-related discussions. (Xinhua/POOL/Salvatore Di Nolfi)