Flags wave at the memorial site for those killed during the war, in Independence Square in Kyiv, Ukraine, Saturday, Feb. 24, 2024. (AP Photo/Efrem Lukatsky)

People place Ukrainian flags in memory of civilians killed during the war at Independence Square in central Kyiv, Ukraine, Saturday, Oct. 1, 2022. (AP Photo/Francisco Seco)

A woman reacts during the All-National minute of silence in commemoration of Ukrainian soldiers killed in the country's war against Russia in Independence square in Kyiv, Ukraine, Sunday, Oct. 1, 2023. (AP Photo/Alex Babenko)

Polish Army veteran Slawomir Wysocki, 50, places the country's flag at a memorial site in Independence Square Kyiv, Ukraine, Wednesday, July 12, 2023, to honor a Polish paramedic killed in Ukraine's war against Russia. (AP Photo/Jae C. Hong)

A cleaner sweeps a sidewalk in front of a memorial site honoring people killed in the war in Independence Square in Kyiv, Ukraine, Monday, July 3, 2023. (AP Photo/Jae C. Hong)

A woman takes a picture at the memorial for those killed during the war in Independence Square in Kyiv, Ukraine, Friday, Feb. 24, 2023. (AP Photo/Thibault Camus)

A woman places a Ukrainian flag at a memorial for those killed during the war in Independence Square in Kyiv, Ukraine, Sunday, Feb. 12, 2023. (AP Photo/Emilio Morenatti)

Flags wave at the memorial site for those killed during the war, in Independence Square in Kyiv, Ukraine, Dec. 1, 2022. (AP Photo/Efrem Lukatsky)