Russia's President Vladimir Putin has ordered a daily humanitarian pause in fighting in the Eastern Ghouta enclave in Syria.
It will start on Tuesday and include the creation of a "humanitarian corridor" to allow civilians to leave.
The rebel-held area has been under intense bombardment by the Syrian government, with Russian backing, for over a week.
It has led to more than 550 deaths, according to a monitoring group.
Russian Defence Minister Sergei Shoigu made the announcement, saying the ceasefire would run from 09:00 until 14:00 local time daily.
He said more details on the corridor would be released soon.
The United Nations Security Council unanimously called for a 30-day ceasefire on Saturday.
The resolution demanded that "all parties cease hostilities without delay" to allow aid deliveries and medical evacuations.
Russia had been accused of delaying the UN vote for several days by asking for changes to be made to the draft.
UN Secretary-General Antonio Guterres has described the situation as "hell on Earth", and demanded immediate action.