A woman carries her child as they flee from a residential building that was hit by a Russian rocket in Kharkiv, Ukraine, on Jan. 30. More than 400 Ukrainian children have been killed and hundreds more injured, while some 7.8 million children have been impacted by the war, U.N. said on Tuesday. Photo: Andrii Marienko/VCG

A woman with a baby sit in a shopping center set up for refugees in Mylny in Jaroslaw, Subcarpathia, Poland, on Feb. 27, 2022. As the Russia-Ukraine war stretches into its second year, Ukrainian children continue to be killed, wounded and deeply traumatized by the violence, sparking displacement on a scale and speed not seen since World War II, according to the U.N. Photo: VCG

A Ukrainian girl sits with her dog at an aid collection point on the outskirts of Przemysl on March 4. Photo: Attila Husejnow/VCG

A young refugee girl fleeing Ukraine walks across the tracks on March 8 as she arrives at the border train station in Zahony, Hungary. Photo: Christopher Furlong/VCG

People march alongside “Little Amal,” a 3.5-meter puppet that is the international symbol of child refugees, in the western Ukrainian city of Lviv on May 11. Photo: Yuriy Dyachyshyn/VCG

A woman and her daughter walk past a residential building destroyed by shelling in the town of Irpin, near the Ukrainian capital of Kyiv, on June 16. Photo: Sergei Chuzavkov/VCG

Ukrainian kids play in a crater left by Russian missile strikes at Taras Shevchenko Park in Kyiv on Oct. 16. Photo: Metin Aktas/VCG

Children visit the “St. Nicholas’ Hut” in the Museum of Folk Architecture and Life in Lviv on Dec. 19. According to tradition, Saint Nicholas brings gifts to all good children on the night of Dec. 19. Photo: Olena Znak/VCG

A Ukrainian boy looks at a phone with his mother in a basement in Bakhmut, on Dec. 21. Photo: Andre Luis Alves/VCG

Volunteers put child-sized body armor on a 6-year Ukrainian girl in Kharkiv on Dec. 14. Photo: Sergey Bobok/VCG

A man holds a child’s hand as they stand near a pile of broken windows destroyed by a missile attack in Kyiv, on Jan. 1. Photo: Oleksii Chumachenko/VCG

A woman plays with her child Wednesday at a temporary modular town built for people who lost their homes in Bucha, Ukraine. Photo: Ignacio Marin Fernandez/VCG