Russian lead negotiator on Syria Alexander Lavrentyev, Iranian Deputy Foreign Minister Hossein Jaberi Ansari, Kazakh Foreign Minister Kairat Abdrakhmanov and U.N. Special Envoy for Syria Staffan de Mistura attend the fourth round of Syria peace talks in Astana, Kazakhstan, May 4, 2017. REUTERS/Mukhtar Kholdorbekov

MOSCOW (Reuters) - The safe zones which are being created in Syria will be closed for warplanes of the United States and those of the U.S.-led coalition, Russian news agencies quoted Russian envoy at Syria peace talks Alexander Lavrentyev as saying on Friday.

Turkey and Iran agreed on Thursday to Russia’s proposal for “de-escalation zones” in Syria, a move welcomed by the United Nations but met with scepticism from the United States.