Ukraine’s troops attacked a Russian military base in Lysychansk, Luhansk, on August 16, killing about 100 Russian soldiers, according to Ukrainian media.
Two days before that, Mr Haidai said there was a strike on the headquarters of Russian President Vladimir Putin’s hired mercenaries, the Private Military Company Wagner (PMC Wagner), in Popasnaya.
It comes weeks after Russia changed its war aims to focus on securing the Donbas, an eastern region formed of the Donetsk and Luhansk provinces, already partly held by its separatist proxies. Moscow’s move unleashed the most devastating ground battles of the war.
In mid-May, an entire battalion of Russian troops was wiped out trying to cross the Siverskiy Donets River. Satellite photos showed dozens of destroyed armoured vehicles scattered across either bank.