The ruins of the village of Andriivka, west of Kyiv, on April 14. (David Guttenfelder/The New York Times)

Pallbearers carrying the caskets of Taras Kotliarchuk, 43, and Ivan Mynjo, 24, Ukrainian soldiers who were killed in fighting in the country’s east, during their funerals at Saints Peter and Paul Garrison Church in Lviv on April 18. (Finbarr O'Reilly/The New York Times)

Catherina, 82, cries as she talks about the day she left her house carrying only the clothes she is wearing to flee the Russian attacks in her town, as she sits on a bed settled in a restaurant that was transformed into a shelter for those who are fleeing the war from the eastern region of the country in Dnipro, Ukraine, Wednesday, April 20, 2022. The U.N. refugee agency says more than 5 million refugees have fled Ukraine since Russian troops invaded the country. The agency announced the milestone in Europe's biggest refugee crisis since World War II on Wednesday, April 20, 2022. (AP Photo/Leo Correa)

Vova, 10, looks at the coffin carrying the body of his mother, Maryna, as his father, Ivan Drahun, hugs him during her funeral in Bucha, on the outskirts of Kyiv, on Wednesday, April 20, 2022. Vova's mother died while they sheltered in a cold basement for more than a month during the Russian military's occupation. (AP Photo/Emilio Morenatti)

A bombed-out bridge across the Irpin River on April 17. (Daniel Berehulak/The New York Times)

Alexandre Bulatov, 49, digging a grave in the civilian section of the cemetery in the Kyiv suburb of Irpin on April 18. (David Guttenfelder/The New York Times)

A local man stands atop of destroyed Russian armoured vehicles in Bucha, Ukraine, Tuesday, April 19, 2022. (AP Photo/Evgeniy Maloletka)

Valentyna Nechyporenko, 77, mourning at the grave of her 47-year-old son Ruslan during his funeral at a cemetery in Bucha on April 18. Ruslan was killed by the Russian army on March 17 while delivering humanitarian aid to his neighbors. (Daniel Berehulak/The New York Times)