Russia launched its attack on 24 February, but nearly six weeks into the war Russian forces have retreated from the outskirts of Kyiv and are focussing on fighting in the east of the country.
Ukraine may have "won the Battle of Kyiv", but analysts at the Institute for the Study of War warn the war could still go Russia's way if it is successful in its eastern offensive.
Russian units which have withdrawn from the north of the country are likely to require significant re-equipping before being available for deployment in the east, says the UK Ministry of Defence (MoD). Ukrainian forces have retaken territory around Kyiv and Chernihiv, as Russian troops have withdrawn across the borders into Belarus and western Russia.
Ukraine has accused Russia of killing civilians in the town of Bucha, just outside the capital, after reporters found bodies strewn in the streets.
Satellite images of the area appear to also show bodies left in the open.
Ukrainian forces have been carrying out clearing operations looking for pockets of Russian troops who have been unintentionally left behind.