For example, the Russian submarine capability is one of the best ... submarine was the lead-bismuth cooled reactor. This reactor type allowed for a smaller reactor size, reducing the overall ...

Russia's submarine fleet is one of the most capable in the world, perhaps second only to that of the United States. The submarine fleet is mostly a holdover from the days of the Cold War.

For years, Russian submarine activity has extended well beyond ... which includes more than 10 types of unmanned underwater vehicles, Belgorod and Poseidon represent a serious step forward in ...

On Monday, the Defense Ministry of Japan reported that four Russian vessels were spotted sailing in waters off the northern coast of Hokkaido, one of the four main islands of Japan, as they transited ...