Russian authorities have allegedly allocated $369 million to recover the remains of K-27 and K-159, two Soviet era submarines from the Arctic seabed.

Russia is amassing nuclear weapons and attack submarines in the Arctic Circle as it prepares for war with Nato, Norway’s defence minister has warned.

The Russian Navy exclusively operates titanium-based nuclear submarines that are much more durable. Here's why no other country uses these subs.

A Russian diesel-electric submarine, The Novorossiysk, is being trailed through the North Sea by NATO ships, sparking headlines about a “crippled” vessel and “embarrassment for Moscow.” But is it really in trouble?

Poland has said its aircraft intercepted a Russian jet carrying out a mission over the Baltic Sea with its transponder turned off this morning.

"The armed forces' jet fighters and warships met up with the submarine .... and are now following it," Sweden's armed forces said.