Ukraine says a new kind of drone has just taken its war at sea below the surface. On Monday, Ukraine's domestic intelligence service claimed the nation's underwater drones critically damaged a Russian ...

Ukraine's internal security agency said the attack damaged and disabled a Russian Kilo-class submarine in the port city of Novorossiysk.

Ukrainian "Sub Sea Baby" drones critically damage Russian submarine equipped with Kalibr cruise missiles in Novorossiysk, the ...