Russian President Vladimir Putin is calling on both sides in the conflict in east Ukraine to halt all military operations.
A Kremlin statement Saturday says "the president of Russia calls on all parties to the conflict to cease hostilities and sit down at the negotiating table."
The statement said Putin supported Ukrainian President Petro Poroshenko's decision to order Ukrainian troops to observe a unilateral ceasefire starting Friday night.
Poroshenko says the week-long ceasefire is the first step in a peace plan that would include an amnesty for pro-Russian separatist fighters.
Putin said however that without action directed at starting talks, the plan was not "viable or realistic."