witnesses fighting between Ukrainian and Russian troops closing in on Kyiv

Ukrainian troops drop bombs on Russian forces with drones

Ukrainian Troops In Battle For Soledar Faced Waves Of Russian Infantry

Pro-Russian troops blast Ukrainian targets with rockets and howitzers

Ukrainian parliamentarians ask Mexico to send weapons to combat Russian troops

#VIDEO: Russian troops jump from vehicles as Ukrainian drones crash into them, blowing them up

Dramatic moment Ukrainian troops shoot down Russian helicopter using British ‘Starstreak’ missiles

Russian troops close in on Ukrainian capital of Kyiv

Ukraine calls on Russian troops to "immediately" lay down arms

#VIDEO: Russian missile hits residential building in Ukrainian capital Kyiv as fighting rages

#VIDEO: Ukrainian forces take out Russian tank hiding in the woods

Kyiv hit by Russian missiles on New Year's Eve

#VIDEO: Moment fleeing Russian troops' armoured Vystrel vehicle flips over

Ukrainian armed forces destroy Russian equipment

Satellite Images Appear to Show Mass Grave Near Mariupol

Russian tank with white flag surrenders to Ukrainian soldiers