In the must-see video above, at least three people were killed as Russia targeted central Kyiv in a missile attack in the early hours of Saturday, January 18, the city’s mayor said.

At least three people were killed in the assault on the capital, and at least one died and 11 were wounded in a separate strike in the southern city of Zaporizhzhia.

Russia’s military on Tuesday said it would retaliate against Ukraine after Kyiv attacked Russian regions by firing six US-made ATACMS ballistic missiles, six UK-made Storm Shadow cruise missiles and launching one of the biggest drone attacks to date.

Ukraine is working on a homegrown air defense system to rival the US-made Patriot system, according to the commander in chief of its army.

Russia and Ukraine exchanged large drone attacks on Sunday night into Monday, with alleged Ukrainian UAVs forcing flight restrictions at three Russian airports.

Russian forces launched 99 drones towards Ukraine from six different directions. The Ukrainian air defense forces shot down most of the enemy UAVs, the Air Force of the Armed Forces of Ukraine reports.

The drones were launched from Cape Chauda in occupied Crimea, as well as from Millerovo, Bryansk, Kursk, Orel, and Primorsko-Akhtarsk in Russia. Air defense systems were active in the Poltava, Sumy, Kharkiv,

The Ukrainian army says it has fired a wave of drones into Russia, sparking a blaze at the country’s oil depot and causing explosions at a plant producing military aircraft. The army said on Tuesday that the drones were fired in the western Voronezh region bordering Ukraine,

Ukrainian forces struck the Liskinskaya oil depot in Russia's Voronezh Oblast, the Smolensk Aviation Plant, and a Russian command post in Donetsk Oblast overnight on Jan. 21, Ukraine's General Staff said.