By introducing its first Kilo-class sub in 1980, the Soviet Union was entering a new phase of diesel-electric submarine ...

Ukraine's underwater drones have broken through the long-held belief that submarines are unbeatable. On December 15, 2025, ...

Russia's only known submarine in the Mediterranean Sea, the Kilo-class Novorossiysk, was spotted leaving the region last week ...

Twenty-four Kilo-class submarines were operated by the Soviet Union, of which eleven are still operated by Russia. One was sold to Poland, which remains operational, but another, sold to Romania, is ...

Russia’s Kilo-class and Yasen-class submarines are likely considered as a massive, high-tech threat by the Pentagon and China’s growing fleet of Jin-class ballistic missile submarines are acquiring ...

Ukraine's internal security agency said it used an underwater drone to damage a Russian submarine. The agency described the attack as a first, potentially signaling a new chapter in drone warfare.

Vietnamese state television footage aired in early January and subsequently circulated online has offered a rare and ...