Ukraine said it obtained secret data on a new Russian nuclear missile submarine. The classified data includes information about the submarine's survivability systems. The Project 955A-class vessel ...

The Rybachiy base, which hosts nuclear-powered submarines from Russia’s Pacific Fleet, lies in a cove about 80 miles from the powerful earthquake that struck near the Kamchatka peninsula last week.

Russia is modernizing its naval power, shifting from large, Soviet-era vessels to a smaller, stealthier, and more heavily armed submarine fleet centered on the new Borei-class ballistic missile boats.