In Russia-occupied Crimea, the Moscow-appointed head of the city of Sevastopol, Mikhail Razvozhayev, said that Russian defenses downed four aerial drones attacking the city and sank two uncrewed boats near the shore.

A Ukrainian sea drone has destroyed a Russian helicopter off the coast of Crimea for the first time. Footage of the attack shared by HUR, Kyiv’s military intelligence, showed the drone bobbing on the seas as the aircraft manoeuvred in the skies above. Plumes of water splashed up next to the Magura V5 drone as Russian fire hit the sea around it.

The airport is closed to all incoming and outgoing flights. "To ensure the safety of civilian aircraft, temporary restrictions have been imposed on the operation of Kazan airport this morning," the Federal Air Transport Agency said.

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The Russian official didn’t comment on statements blaming Wednesday’s Azerbaijan Airlines crash on Russian air defenses responding to a Ukrainian attack.

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.

Video released by HUR shows a large explosion followed by what appears to be the detonation of a cluster munition.

Russians attacked a suburb of Kherson - the village of Antonivka - with a drone, a man was wounded. According to Ukrinform, this was reporte

Ukraine said it destroyed a Russian Mi-8 helicopter with a Magura V5 naval strike drone that was equipped with missile weapons.