Video: Russia’s ‘rigid’ forces collapse to ‘audacious lightning’ Ukraine counteroffensive

Ukraine has carried out such a swift counteroffensive against Russia it's taken even their own forces by surprise.

Ukrainian troops have recaptured huge areas of territory in the east of the country, some reportedly reaching a settlement almost on the border with Russia.

As Russian troops abandon their positions, leaving tanks, ammunition and military hardware behind, Ukrainian flags have been raised in dozens of newly liberated villages and towns.