Syria’s simmering 11-year war is at risk of boiling up once again with a return to large-scale combat after several frontlines across the country flared up in recent months, the United Nations warned on Wednesday in a new report. “Syria cannot afford a return to larger-scale fighting, but that is where it may be heading,” said Paulo Sérgio Pinheiro, chair of the UN’s Syria commission. @UNCOISYRIA press conference now live: https://t.co/ZZ7qNfFvLV Commission Chair Paulo Pinheiro: “Syrians face increasing, intolerable hardships. Syria can’t afford return to larger-scale fighting but escalation m…