Missile Defense and the North Korean Nuclear Threat
"...many in Washington and Seoul to believe that the DPRK is planning to conduct its fourth nuclear test and/or another long-range missile test to enhance the credibility of its nuclear deterrent. But while public attention is once again on the idea of a North Korean nuclear-tipped ICBM that could threaten the continental United States, the strategic ground is shifting...."
Reference: thediplomat.com .