"Today, more than 100,000 people in Mykolajiv are without heat after a Russian drone hit the city's critical infrastructure," writes Zelenskyj on X.
"Those who genuinely seek peace and prepare for negotiations do not act in this way," he says, referring to the fact that Russian President Vladimir Putin and US President Donald Trump have talked about initiating negotiations on the Ukraine war.
Zelenskyj adds that work is underway to try to restore heat.
Further east, Ukraine claims to have retaken a mine near the strategically important city of Pokrovsk in Donetsk.
A number of counterattacks have been successful. We can already report on the liberation of the village of Pisjtjane, says Viktor Tregubov, spokesperson for the Ukrainian soldiers in the area, on Ukrainian TV.
About a month has passed since the Russian invasion forces claimed to have taken Pisjtjane in southeastern Ukraine.
