World powers have agreed to seek a national “cessation of hostilities” in Syria to start in a week’s time, after discussions in Munich, Germany.
The stay is not going to apply to the conflict against jihadist groups Islamic State (IS) and al-Nusra Front.
The 17-member International Syria Support Group (ISSG) also agreed to accelerate and enlarge assistance deliveries.
The statement comes as the Syrian military, backed by Russian air strikes, improvements in Aleppo state.
The move threatens to encircle thousands of civilians in rebel-held areas of the more significant city of Aleppo.
The Syrian government hasn’t yet reacted, though the statement was welcomed by a crucial rebel coalition.