UNITED NATIONS — U.N. Secretary-General Antonio Guterres said Thursday that developments in Syria over the last week are “grave and dramatic,” and it is “high time” for all parties in the country to “engage seriously” to resolve the nearly 14-year-long conflict. “Tens of thousands of civilians are at risk in a region already on fire,” Guterres told reporters. “We are seeing the bitter fruits of a chronic collective failure of previous de-escalation arrangements to produce a genuine nationwide ceasefire or a serious political process to implement Security Council resolutions. This must change.” On November 27, multiple rebel groups aligned under
