Russia, Iran and Turkey need to convene more Syrian ceasefire talks as soon as possible to bring the situation on the ground under control, U.N. Syria envoy Staffan de Mistura said, Reuters reported.
De Mistura is mediating political talks in Geneva, while a separate series of talks in the Kazakh capital Astana - arranged by Russia, Iran and Turkey - are supposed to guarantee the ceasefire.
De Mistura said he had made a strong suggestion "that they do retake the situation in hand and hopefully there will be an Astana meeting as soon as possible in order to control the situation which at the moment is worrisome".
