STORY: U.S. first lady Jill Biden made an unannounced trip to Ukraine on Sunday,
Sharing flowers and a hug with Ukraine's first lady Olena Zelenska.
The two visited a school serving as a temporary shelter for more than 160 Ukrainians, including nearly 50 children.
"I thought it was important to show the Ukrainian people that this war has to stop. This war has been brutal.”
The United Nations says 5.8 million people in total have fled since Russia started what it describes as a "special military operation" in Ukraine on February 24.
Biden's visit came the same day that Russian forces and pro-Russian separatists resumed heavy shelling of the besieged steel plant in Mariupol.
And in the eastern region of Luhansk, at least 60 people were killed by Russian bombing as they sheltered at a school, according to Ukrainian President Volodymyr Zelenskiy.
In Odesa, police released video of what they said was the aftermath of missile strikes in a residential area.
Canadian Prime Minister Justin Trudeau also made a surprise visit to Kyiv on Sunday, announcing new weapons and equipment for the country.
U.S. President Joe Biden has been leading efforts to impose economic sanctions on Russia and pressure President Vladimir Putin to end the war.
The U.S. president has not been to Ukraine since the invasion, but several other top U.S. officials have made trips in the last two weeks.