The Russian submarine that just showed up off of Cuba is one of a new class of subs that has worried the US and NATO for years
After the Severodvinsk was commissioned into the Russian navy, later submarines featured updated designs, designated as part ...
The National Interest18d
Romeo-class Submarine
Here’s What You Need to Remember: Around 22 Romeo submarines are believed to serve in North Korea’s navy today, though at least a handful of these aging vessels are likely not... Here’s What ...