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.

Overnight, Ukraine launched a drone attack on an oil depot in the town of Yartsevo, Russia. "Ukrainian unmanned aircraft targeted the facilities of the fuel and energy complex. As a result of the enemy 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.

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

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

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

The unmanned seacraft has proven to be a game-changer in the naval battle between the two forces, pushing Putin's ships out of the waters around Crimea and back to Russian ports.

Ukraine delivered a big blow to Putin's army as a naval drone destroys a Russian Mi-8 helicopter for the first time in a Black Sea clash. The Magura V5 drone, equipped with missiles, struck the helicopter near Crimea’s Cape Tarkhankut coast,