Reveller in costume with a broom jumps during a Zombie Walk event in central Kiev, Ukraine on October 27, 2018, ahead of Halloween celebrations on October 31. (Photo by Anatolii Stepanov/AFP Photo)

A Russia-backed rebel looks at the flag covered body of an Ukrainian serviceman in Debaltseve, Ukraine, February 20, 2015. The struggle for the strategic rail hub, Debaltseve, a sleepy town with a pre-war population of 25,000 people, left the town in ruins and became one of the darkest pages in the ongoing conflict in eastern Ukraine, which has already killed more than 6,000 people. (Photo by Vadim Ghirda/AP Photo/File)

A slogan and crosses are painted on the helmet of a Ukrainian serviceman in Ruska Lozova, a village retaken by the Ukrainian forces, amid Russia's attack on Ukraine, in Kharkiv region, Ukraine on May 16, 2022. (Photo by Ricardo Moraes/Reuters)

Female Afghan National Police (ANP) officers aim their weapons during a drill at a training centre near the German Bundeswehr army camp Marmal in Mazar-e-Sharif, northern Afghanistan on December 11, 2012. (Photo by Fabrizio Bensch/Reuters/File Photo)

Ukrainian service members of the 3rd Separate Assault Brigade attend military exercises near the town of Bakhmut, amid Russia's attack on Ukraine, in Donetsk region, Ukraine on September 7, 2023. (Photo by Reuters/Stringer)

Members of a newly-formed “Siberian Battalion” within the Ukrainian Armed Forces take part in a military training exercise outside Kyiv on October 24, 2023, amid the Russian invasion of Ukraine. A newly formed “Siberian Battalion” as part of the International Legion within the Ukrainian Armed Forces is made up of Russians who have come to fight against their fellow citizens. They were a varied group-both ethnic Russians with long-standing opposition views and members of minority ethnic groups. (Photo by Genya Savilov/AFP Photo)

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 Ukrainian serviceman smokes a cigarette at his position at the frontline near Bakhmut, Donetsk region, Ukraine, Wednesday, January 11, 2023. (Photo by Evgeniy Maloletka/AP Photo)