At least seven people have been killed and more than a dozen injured in a Russian missile attack on Kharkiv, according to Kyiv officials.
A further two people remain missing after the attack, which saw Russian forces strike Ukraine’s second-largest city at least 15 times, Oleg Sinegubov said.
It comes as US president Joe Biden is being urged to allow American missiles used by Ukraine to be fired into Russian territory, according to officials.
The proposal, pressed by US secretary of state Antony Blinken after a visit to Kyiv last week, is being debated by the White House, the New York Times reported.
Mr Blinken’s pespective is said to have changed since Moscow opened up a new front in Kharkiv, eastern Ukraine, which is stretching Kyiv’s forces across the frontline.