Russia, Black Sea and Magura V5

Defense Intelligence of Ukraine reported historic use of naval drone to take down Russian Mi-8 helicopters on New Year's Eve.
Soldiers of the 47th Magura Brigade, together with the Ukrainian defence forces, repelled a large-scale Russian assault in Russia's Kursk Oblast, taking out almost a company of Russian soldiers.
New video shows a historic first: a Russian helicopter shot down by a surface-to-air missile from a drone boat. This tilts the balance of naval warfare towards the boats.
Ukraine claims to have intercepted Moscow's radio transmissions and obtained audio of the helicopter pilot going down.