In a rare statement acknowledging casualties within its ranks, the Ukrainian military also said that 60 other soldiers were wounded.

Ukrainian drones hit several Russian strategic airfields on Sunday, including the Belaya military base deep in eastern Siberia, after Moscow launched one of the longest drone and missile attack against Kyiv.

Ukraine has launched one of its largest drone attacks on Russia, targeting over 40 Russian military aircraft. The damaged Russian aircraft included nuclear-capable Tu-95 and Tu-22 strategic bombers, which Moscow now uses to fire long-range missiles at Ukraine.