New satellite images show damage to a pier in Russia's Novorossiysk after Ukraine claims to have hit a submarine moored there with an underwater drone

The Ukrainian military says it has blown up a $400m Russian submarine in an unprecedented attack on the Russian navy’s most important remaining Black Sea base located in Novorossiysk.

The Security Service of Ukraine, or SBU, said it executed a "unique special operation" using an underwater drone to strike a Russian Kilo-class submarine at the Black Sea port Novorossiysk, damaging a...