A key oil facility erupted into flames this morning following a suspected drone strike by Ukraine inside Russia. The attack hit a depot in Russia 's Yartsevo district of the Smolensk region, which caught fire overnight on December 31, Russian authorities said.

Flurry of attacks on Kyiv and elsewhere comes as Ukraine says it shot down a Russian Mi-8 helicopter for the first time.

Russia launched an aerial attack on Ukraine, striking the capital and other regions with multiple missiles and drones.