Ukrainian troops have recaptured almost all the territory of Donetsk airport in eastern Ukraine they had lost to separatists in recent weeks and thousands gathered in Kiev for a state-sponsored peace march.
Sunday's offensive brought fighting close to the industrial city of Donetsk, the center of a pro-Russian rebellion, while shelling intensified in other parts of the region known as "Donbass".
With attempts to restart peace talks stalled, pro-Russian rebels have stepped up attacks in the past week and casualties have mounted, including 13 civilians killed in an attack on a passenger bus, which Kiev blamed on the separatists.