Russia's bombing of regions in eastern Ukraine killed at least two people overnight, local officials said on Sunday, after Moscow ended a self-declared Christmas cease-fire and vowed to push on with combat until it reaches a victory over its neighbor.

President Vladimir Putin ordered a 36-hour cease-fire along the line of contact from Friday at midday to observe Russia and Ukraine's Orthodox Christmas, which fell on Saturday.

Ukraine rejected the truce, and the general staff of Ukraine's armed forces said Russian troops had shelled dozens of positions and settlements along the front line on Saturday.