Satellite images of Mariupol appear to show rows of mass graves. Russian soldiers are accused of burying the bodies of countless civilians including women and children. Mariupol's mayor is calling it evidence of war crimes. In the east, heavy fighting is reported in Donetsk and Luhansk. Evacuation attempts were interrupted by Russian shelling. Meanwhile, Ukraine's finance minister is in Washington for talks. Later in today's show we discuss what the country needs, who he singles out for their ongoing support, and why Ukraine will never surrender. But first, CNN's Matt Rivers reports from Lviv on the evacuation efforts.

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