The Epoch Times:
Submarines carrying nuclear-tipped ballistic missiles are apocalyptical leviathans—stealthily moving missile launchers—and North Korea has them.
Of the three legs of the U.S. nuclear triad—land-launched ICBMs, bombers with nuclear bombs or missiles, and submarines with nuclear missiles—submarines are arguably the most deadly. They are all but undetectable, can get close to the enemy, and are very difficult to counteract.
All of which explains why the United States, South Korea, and Japan are currently drilling on how to detect airborne missiles.
