It is necessary not to slam the door and dig in heels to achieve the progress during the inter-Syrian negotiations, the Russian Foreign Minister Sergey Lavrov said.
"In order to come to terms over six months it is necessary not to slam the door and dig in heels, as several delegates of the so-called Riyadh group have done," TASS cited him as saying.
UN Syria envoy Staffan de Mistura said that the Geneva peace talks on Syria will continue until April 27.
