[Jimbuna]

The White House says President Biden was not calling for regime change when he said Vladimir Putin "cannot remain in power"

US Secretary of State Antony Blinken has reiterated this stance during a speech in Jerusalem.

"The president's point was that Putin cannot be allowed to exercise power over his neighbours or the region," an official said.

The Kremlin responded by saying: "That's not for Biden to decide - the president of Russia is elected by Russians"

The western city of Lviv, which had been spared the worst of the fighting, has come under heavy rocket fire.

The mayor of Chernihiv says the northern Ukrainian city is now completely encircled by Russian forces.

The developments come despite Russia saying it would focus its invasion on the east.