A worker installs razor wire as part of defense structures near a front line in Kharkiv region, Ukraine on December 25, 2023. (Photo by Viacheslav Ratynskyi/Reuters)





A Ukrainian serviceman of 2 battalion 92nd brigade with the call sign “Myron”, 21, is seen inside a dugout, amid Russia's attack on Ukraine, at a position near Bakhmut in Donetsk region, Ukraine on January 10, 2024. (Photo by Inna Varenytsia/Reuters)





Air Defence Ukrainian servicemen, who took part in the defence operations during recent attacks on the Kyiv region, react during a meeting with the Commander of the Joint Forces of the Armed Forces of Ukraine, Lieutenant General Sergiy Nayev (not pictured), near Kyiv, on January 3, 2024, amid the Russian invasion in Ukraine. Deadly air strikes hit residential buildings in Ukraine on January 2, 2024, in an escalation of aerial attacks that killed five people and 130 wounded. (Photo by Anatolii Stepanov/AFP Photo)





Funeral workers down a coffin into a grave during a funeral ceremony of Sviatoslav Romanchuk, Ukrainian serviceman, at the cemetery in Kyiv, Ukraine, Wednesday, January 3, 2024. Romanchuk joined territorial defence since the beginning of or Russian invasion and was killed on Dec. 28, 2023 in Lyman direction, Donetsk region. (Photo by Evgeniy Maloletka/AP Photo)





A Ukrainian army chaplain pays his respects at the coffin of Ukrainian serviceman and famous Ukrainian poet Maksym Kryvtsov, who was killed in a battle with the Russian troops, during the funeral ceremony in St. Michael Cathedral in Kyiv, Ukraine, Thursday, January 11, 2024. (Photo by Efrem Lukatsky/AP Photo)





Ukrainian civilians take part in the final exercise of a five-day basic military training, amid Russia's attack on Ukraine, near Kyiv, Ukraine on January 12, 2024. (Photo by Alina Smutko/Reuters)





A Ukrainian serviceman of 2 battalion 92nd brigade prepares  to fire a 120-mm towed artillery pieces-mortar 2B16 “Nona-K” which was captured in the battle with the Russian army towards Russian troops, amid Russia's attack on Ukraine, at a position near Bakhmut in Donetsk region, Ukraine on January 10, 2024. (Photo by Inna Varenytsia/Reuters)





Mortar platoon soldiers with an 82mm mortar perform a combat mission as Ukrainian soldiers hold their positions in the snow-covered Serebryan Forest in temperatures of –15°C, on January 10, 2024 in Kreminna, Ukraine. Ukraine's Azov National Guard Brigade has returned to the front and has engaged in combat in the ongoing war with Russia. In 2022, Azov Brigade had fought in the battle of Mariupol and siege of the Azovstal Iron and Steel Works before some commanders were taken as prisoners of war and later released through Turkey. (Photo by Kostiantyn Liberov/Libkos/Getty Images)





Serhii Naiev, Commander of the Joint Forces of the Armed Forces of Ukraine and Ukrainian servicemen check newly build anti tank fortifications, named “dragon's teeth” and razor wire, amid Russia's attack on Ukraine, near Russian border in Chernihiv region, Ukraine on January 10, 2024. (Photo by Gleb Garanich/Reuters)





Ukrainian serviceman Vyacheslav greets his wife Viktoria, who is visiting him during a short break from his frontline duty, at the train station in Kramatorsk, Ukraine on December 22, 2023. (Photo by Thomas Peter/Reuters)





A Ukrainian serviceman of the 128th separate mountain assault Transcarpathian brigade of the Armed Forces of Ukraine takes part in tank drills, amid Russia's attack on Ukraine, in Zaporizhzhia region, Ukraine on January 11, 2024. (Photo by Reuters/Stringer)





Artem, a serviceman of infantry battalion of the 61st mechanised brigade, pets a dog in a trench at a position near the frontline, in Kharkiv region, Ukraine on January 6, 2024. (Photo by Sofiia Gatilova/Reuters)





Ukrainian service members of 79th brigade fire a L119 howitzer towards Russian troops near the front line town of Marinka, amid Russia's attack on Ukraine, in Donetsk region, Ukraine on January 12, 2024. (Photo by Oleksandr Ratushniak/Reuters)





People attend the funeral ceremony of Ukrainian poet and serviceman Maksym Kryvtsov who was killed in action fighting against Russia’s attack on Ukraine, in Independence Square in Kyiv on January 11, 2024. (Photo by Thomas Peter/Reuters)





A Ukrainian service member of 79th brigade walks at a street, amid Russia's attack on Ukraine, in Donetsk region, Ukraine on January 12, 2024. (Photo by Oleksandr Ratushniak/Reuters)