But Washington should be in no hurry to make deals with another dictator, even one with the potential to develop nuclear-tipped missiles.

CNN: ASIANOW - TIME Asia | Don't Reward Kim

But most experts believe that it is doable without needing to employ nuclear-tipped missiles to break through Iran's extraordinarily deep (in some cases, 450 feet) underground bunkers.

FORBES: The Unthinkable

In any case, Pyongyang is continuing to pursue advancements, apparently out of the belief that it needs nuclear-tipped missiles capable of reaching the U.S. to have a credible deterrent.

NPR: Despite Threats, Risks Temper Korea War Tensions