Ukrainian President Volodymyr Zelenskyy has stressed that his country's forces have retaken much of Kharkiv region in the east from Russian occupiers.
Zelenskyy on Wednesday visited the recaptured key city of Izyum, where he observed a moment of silence for soldiers killed in the fighting and raised the Ukrainian flag.
In a video message released on Thursday, Zelenskyy says, "As of today, almost the entire region is de-occupied. It was an unprecedented movement of our warriors. Ukrainians once again managed to do what many considered impossible."
But Russian forces are continuing their attacks in the east.
Kyrylo Tymoshenko, the deputy head of the presidential office, revealed on Wednesday that Russian missiles struck a water facility in Kryvyi Rih in the eastern region of Dnipropetrovsk.
The attack reportedly raised a river's water level and temporarily rendered taps useless.
A military expert suggested the advance of Ukrainian troops would slow if the Russians are pushed further east, where they will have better logistic lines with Russia.
Ukrainian forces are also stepping up their offensive in the south.
The country's media report Ukrainian forces retook a village about 20 kilometers northwest of the capital of Kherson region on Tuesday.