The chancellor warned of "extremely difficult decisions" to restore confidence and economic stability.
Russia's call-up of troops, sham referendums and nuclear threats are "not signs of strength or confidence," the White House's national security adviser said.
“He’s a first-class person. What he’s doing is something he believed is the right thing he was doing for Russia."
At least 13 killed and 40 wounded on another difficult day on the battlefront.
UK intelligence suggests Russian officials will also be "distracted" as they try to avoid "culpability" for the invasion's failures.
As the conflict goes into the second month, Volodymyr Zelenskyy has once again called for more help from Nato and its allies.
Russian forces "have made minimal progress this week".
The Hollywood star described himself as a "longtime friend of the Russian people" who are being lied to by the Russian leader.
"The Met's unwavering commitment to appalling optics is almost starting to seem deliberate."
Russia's invasion has destroyed health care facilities, curbing Ukrainians' access to services, including Covid vaccinations, the World Health Organisation said.