Prolly devastating in the submarine races context as well."The deadly group of stealthy underwater weapons are currently patrolling the world and have already reportedly breached UK waters having approached the Royal Navy's base in Faslane, Scotland.
Russia is stepping up its secret submarine programme to "Cold War" levels and experts warn NATO members "no longer" have the defences to stop the aquatic death machines.
Andrew Metrick, who co-wrote the report for the Center for Strategic and International Studies (CSIS), said: "Russia operates a small number of very small, nuclear powered submarines that are capable of diving in excess of several thousand meters.
"You can imagine what a clandestine deployable deep submergence vehicle could be used for."