Date: Jun 29, 2018 Source: The Daily Star Syrian opposition negotiator decries US 'silence' over offensive Reuters RIYADH: Syria's chief opposition negotiator Nasr al-Hariri Thursday decried "U.S. silence" over a Syrian government offensive in southwest Syria, where Washington agreed a "de-escalation" zone last year with Jordan and Damascus' ally Russia. Speaking in Riyadh, he said that only a "malicious deal" could explain the lack of a U.S. response over the government's Russia-backed campaign in the southwest, after Washington used military force against attacks on allies elsewhere in Syria.