Members of a Ukrainian brigade have described how they were secretly relocated to help defend a section of the country's border with Russia a few days before a new invasion began.
One commander told Sky News how his guns were even firing at Russian troops who were "brazenly" amassing on the Russian side of the border some 24 hours prior to the incursion into Kharkiv.
"We were hitting tanks on the border… it was already a real war," said Sasha, 26, who uses the callsign "black".
The comments offer a sense of how Ukraineattempted - ahead of time - to scramble forces to counter a Russian build-up along its long, northeastern border.
