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

Ukrainian drones attacked key military facilities in Russia, including the Smolensk Aviation Plant and a refinery. The information was provided by the General Staff in Kyiv. Ukrainian drones conducted attacks on strategic targets in Russia,

The Smolensk Aviation Plant produces the Soviet-designed Su-25 ground attack aircraft, as well as Kh-55 and Kh-59 missiles.

The barrage appeared to be one of the largest recent assaults in Ukraine’s campaign to damage Russia’s war machine on its home territory.

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

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.

Liskynska oil depot (Voronezh Oblast, Russia) – hit for the second time in a week, as Ukraine’s Defense Forces first targeted the facility on Jan. 17, causing significant damage. The facility, owned by Rosneft,

Ukrainian defence forces hit a number of important targets in Russia on the night of 20-21 January, including an oil depot in Russia’s Voronezh Oblast and an aircraft factory near Smolensk. Source: General Staff of the Armed Forces of Ukraine on Facebook Quote: "For the second time in a week,