Ukrainian Air Force officers attend a graduation ceremony at the National University of Defence of Ukraine in Kiev, April 24, 2015. (Photo by Gleb Garanich/Reuters)

A general view of the Drax Power Station, illuminated in the colours of the Ukrainian flag, in North Yorkshire, Britain on April 1, 2022. (Photo by Lee Smith/Reuters)

A Ukrainian serviceman kisses his partner at the train station in Kramatorsk, Ukraine, Thursday, March 23, 2023. (Photo by Evgeniy Maloletka/AP Photo)

An Ukrainian serviceman caresses a cat near Bachmut, on March 23, 2023, amid the Russian invasion of Ukraine. (Photo by Aris Messinis/AFP Photo)

A Ukrainian servicewoman fires a 2S7 Pion self-propelled gun at a position, as Russia's attack on Ukraine continues, on a frontline in Kherson region, Ukraine on November 9, 2022. (Photo by Viacheslav Ratynskyi/Reuters)

A Ukrainian serviceman walks an empty street in the front line city of Bakhmut, in Donetsk region, Ukraine on February 25, 2023. (Photo by Serhii Nuzhnenko/Radio Free Europe/Radio Liberty)

A woman walks past a graffiti mural, showing a child protecting with a Ukrainian flag against the war, made by artist ChemiS, on March 19, 2022 in Prague. (Photo by Michal Cizek/AFP Photo)

A Ukrainian MSLR BM-21 “Grad” fires towards Russian positions, near Bakhmut at the frontline in Donetsk region, Ukraine, Wednesday, June 21, 2023. (Photo by Iryna Rybakova via AP Photo)