2014. Some moments of the Kharkiv spring

There was one night in the troubled spring of the dramatic year 2014 that saved Kharkiv from the tragic fate of Donetsk, Luhansk, and many Donbas towns and villages, which endure now the seventh year of devastation by hands of separatists and Russian mercenaries.
It was the first victory in the dirty undeclared war which was waged against Ukraine by the criminal Putin regime.
How did we manage to defend Kharkiv? Why did we not succeed in Donetsk and Luhansk? What factors decided the fate of th