– USNI News – Recent reports that North Korea is developing submarines based on obsolete Golf-II class Soviet-era submarines has gained worldwide attention. However obsolete, it is reported that North Korea had invested its time in “examining and replicating” the missile-launch system of the Soviet-era subs. Hence, these submarines would be able to fire ballistic missiles. In fact, reports confirm that Pyongyang already is developing a vertical-launch system for submarine launched ballistic missiles (SLBMs). Raising further concerns about that is the fact that North Korean ballistic missiles could be armed with nuclear warheads.