As Russia prepared to invade Ukraine, we took a look at the history of the complex relationship between the nations.

A widely-used online Ukrainian battlefield map appeared to show Ukrainian forces no longer in control of the town of Sudzha in Russia's Kursk region on Wednesday.

Kyiv's troops are struggling to hold territory in Russia's Kursk region and may be forced to retreat, reports say.

The situation in Ukraine is often fast moving and it is likely there will be times when there have been changes not reflected in the maps.

The map also shows Russian-controlled territory in Ukraine based on analysis by the ... and our so-called new historical territories, which have returned to the Russian Federation, there are ...

Talks kicked off this week in a United States-led effort to end the war in Ukraine, nearly three years after Russia invaded its neighbor.