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UN Special Envoy for Syria Staffan de Mistura (front) arrives prior to a round of negotiation, during the UN-led Intra-Syrian talks in Geneva, Switzerland, Nov. 30, 2017. UN Special Envoy for Syria Staffan de Mistura on Thursday hold seperate meetings with the Syrian government delegation and the Syrian Negotiation Commission (SNC) delegations at the same time. (Xinhua/POOL/Xu Jinquan)