The head of the Syrian Opposition delegation to the 18th round of Astana peace negotiations on Syria, Ahmed Toma, has spoken with cautious positivity about “acceptable” results of the latest round of negotiations aimed at resolving the conflict in Syria. “There has been progress on some key issues. We have done what’s been asked of us, and negotiated with transparency.” Toma told the Arabic news website Arabi 21. The latest two-day round of talks, which concluded on Thursday, discussed humanitarian aid, counter-terrorism and separate negotiations to draft a constitution for Syria, which have s…