"Russia has submitted a draft resolution approving the agreements to settle Ukrainian crisis reached in Minsk on February 12 to the UN Security Council. [The draft resolution] aims to support the package of Minsk agreements without any interpretations," the source said.
"We hope that the resolution will be accepted unanimously. A Security Council meeting has been previously scheduled for Sunday," the source said.
The measures include a ceasefire between Kiev forces and independence supporters in eastern Ukraine, the creation of a buffer zone between the two sides through the withdrawal of heavy weaponry from the region and an all-for-all prisoner exchange.
The ceasefire comes into force at midnight local time on February 15 (February 14, 22:00 GMT).