For three years, Ukraine has waged an unconventional naval campaign that fundamentally altered the balance of power in the Black Sea. What began as an improvised effort by four engineers working with ...

Key Points and Summary - Russia’s Kilo-class submarines may be Cold War designs, but they remain at the core of Moscow’s conventional undersea fleet. -Nicknamed “Black Holes” for their extreme ...

According to news reports, a Cyprus-based company bought advanced sonar detection equipment from the West—then transferred it to Russia for use in the Arctic. The West continues to be its own worst ...

The British navy said Thursday it tracked a Russian submarine navigating through the English Channel for three days, as it steps up efforts to police its seas against such threats. A British naval ...

Ukraine’s domestic security service, the SBU, said Monday that it had carried out an attack on a Russian submarine in the Black Sea port of Novorossiysk, causing critical damage to the vessel and ...

As it tried to demonstrate its continuing ability to fight, Ukraine said it had used drones to inflict serious damage on a Russian Kilo-class submarine at a Black Sea port. By Maria Varenikova ...