Lieutenant Colonel Yevhenii Ivanov killed while performing combat mission in Su-27 fighter jet (updated) At midday on 8 December 2025, in the eastern direction, Lieutenant Colonel Yevhenii Vitaliiovych Ivanov, senior navigator of the 39th Tactical Aviation Brigade, was killed while performing a combat mission in a Su-27 aircraft. 8 053 24 Previously in trend: losses of Ukraine