From left: Turkish Foreign Ministry Deputy Undersecretary Sedat Onal; Kazakh Foreign Minister Kairat Abdrakhmanov; as Russia’s special envoy on Syria, Alexander Lavrentiev; U.N. Syria envoy Staffan de Mistura; and Iran’s Deputy Foreign Minister Hossein Jaber Ansari. Last week, Syrian opposition and regime leaders negotiated the continuation of a tentative cease-fire in Astana, Kazakhstan, with pledged support from Russia, Iran and Turkey.