"In order to halt bloodletting and stabilise the situation in southeastern Ukraine" Putin called on both Kiev and pro-Russian separatists to quickly agree to implement his roadmap.
The first point is a "halt to active offensive operations by military forces and armed rebel units" around the rebel strongholds of Donetsk and Lugansk, Putin said in televised comments during a visit to the Mongolian capital Ulan-Bator.
The roadmap also calls for a withdrawal by Ukrainian forces to positions from which they cannot shell cities, and a halt to airstrikes by Kiev's military.
"I believe that a final agreement between the authorities of Kiev and southeastern Ukraine can be reached and cemented during a meeting of the Contact Group on September 5," said Putin.
The Ukraine Contact Group, which includes representatives of Kiev, the separatist rebels, Moscow and the OSCE is scheduled to meet on Friday.