Armed man stand at entrance of the naval headquarters in Sevastopol, March 19, 2014. Around a dozen Ukrainian servicemen, unarmed and in civilian clothes, walked out of the Ukrainian naval headquarters in the Crimean port of Sevastopol on Wednesday after it was taken over by pro-Russian forces, a Reuters witness said. (Photo by Baz Ratner/Reuters)

A Ukrainian serviceman of the 65th mechanized brigade smoke on position of a Soviet-made 2s1 Gvozdyka 120mm howitzer in the Zaporizhia region, Ukraine, 15 November 2023, amid the Russian invasion. Russian troops entered Ukrainian territory in February 2022, starting a conflict that has provoked destruction and a humanitarian crisis. (Photo by Kateryna Klochko/EPA)

A military instructor teaches a schoolboy shooting with Kalashnikov rifles, during a training session at a military unit of the National Guard of Ukraine in western Ukrainian city of Lviv on February 15, 2022. (Photo by Yuriy Dyachyshyn/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)

Ukrainian servicemen of the 28th Separate Mechanised Brigade fires a 122mm mortar towards Russian positions at the front line, near Bakhmut, Donetsk region, Ukraine, Sunday, March 3, 2024. (Photo by Efrem Lukatsky/AP Photo)