Ukrainian service members of the 4th Ivan Vyhovskyi Separate Tank Brigade take their seats in a 2S1 Gvozdika self-propelled howitzer before firing toward Russian troops near the front line town of Kupiansk, amid Russia's attack on Ukraine, on Christmas Eve in Kharkiv region, Ukraine on December 24, 2023. (Photo by Viacheslav Ratynskyi/Reuters)
