Ukrainian forces destroyed a pontoon bridge and parts of a Russian armoured column as it tried to cross a river in the Donbas region, video footage released by Ukraine's military showed today, and a Russian naval ship was set afire in the Black Sea.

Russia has suffered setbacks on the battlefield as Ukraine drives its troops out of the region around the second-largest city of Kharkiv, the fastest advance since forcing the Kremlin's forces from Kyiv and the northeast over a month ago.

Reuters journalists have...